Windows Linux Mac Windows Linux Mac

.java.class

$ javac Hello.java

$ java Hello Hello.class.class

Hello, world.

public class Hello{ public static void main(string args[]){ System.out.println("Hello, world.");

main public class Hello{ public static void main(string args[]){ System.out.println("Hello, world."); {

println System.out.println( ); System.out.println( abcd ); abcd System.out.println( abcd + efg ); System.out.println( var= +514); abcdefg var=514

n n System.out.println( ab ncd ); ab cd System.out.println( abc + d nef ); System.out.println( var n= +514); abcd ef var =514

print System.out.print( ); println System.out.println( abcd ); System.out.println( abcd + efg ); System.out.println( var= +514); System.out.print( abcd ); System.out.print( abcd + efg ); System.out.print( var= +514); abcd abcdefg var=514 abcdabcdef gvar=514

// /* */ /* */ System.out.println( abcd ); // OK abcd // //System.out.println( abc + def ); // System.out.println( var= +514); var=514

##### *#### **### ***## ****# ***** public class Reidai21 { public static void main(string[] args) { System.out.println("#####"); System.out.println("*####"); System.out.println("**###"); System.out.println("***##"); System.out.println("****#"); System.out.println("*****");

* *** ***** ******* ***** *** *

println print ; int d; d = 10; System.out.println(d+ ); 10! double f = 3.14; System.out.println( +f); 3.14 char c = a ; System.out.println(c+ b c ); String str = Happy ; System.out.println(str+!!! ); a b c Happy!!!

* String stars0=" *"; *** String stars1=" ***"; ***** String stars2=" *****"; ******* String stars3="*******"; ***** *** *

int kamakura=1192; int muromachi=1338; int edo=1603; String bakufu=" "; String nen=" "; 1192 1338 1603

char c0= ; char c1= ; char c2= ; char c3= ; char c4= ; char c10=' '; char c11=' '; char c12=' '; char c13=' '; char c14=' '; char c15=' '; ; char c5=' '; char c6=' '; char c7= '; char c8=' '; char c9=' ';

10 25 5 dt dt[0] dt[1] dt[2] int dt[] = new int[3];// (4.1) dt[1] = 25; System.out.println(dt[1]+ ); 25

dt[1]=25; int dt[]; int[] dt; dt=new int[3]; dt dt dt dt[0] dt[1] dt[2] dt[0] 25 dt[1] dt[2] int dt[] = new int[3];

dt dt.length 10 25 5 int dt dt[0] dt[1] dt[2] dt.length dt int int dt[] = new int[3]; dt[dt.length-1] = 5; 10 dt[0] 25 dt[1] 5 dt[2]

double f = 3.14; int aa[] = {10,25,5; aa 10 25 5 aa[0] aa[1] aa[2] double bb[] = {1.2, 3.3, 5.1; 1.2 bb[0] 3.3 bb[1] 5.1 bb[2] String ss[] = { abc, def, ghi ; ss abc ss[0] def ss[1] ghi ss[2]

int aa[] = {10,25,5; int bb[] = new int[3]; bb[0]=aa[0]; bb[1]=aa[1]; bb[2]=aa[2]; int bb[] = (int[])aa.clone(); aa bb int bb[] = new int[3]; System.arraycopy(aa,0,bb,0,aa.length); 10 25 5 aa[0] aa[1] aa[2] 10 25 5 aa[0] aa[1] aa[2]

A A A AAAAA A A public class Reidai41 { public static void main(string[] args) { String aa[]={ " A", " A A", " AAAAA", "A A", ; System.out.println(aa[0]); System.out.println(aa[1]); System.out.println(aa[2]); System.out.println(aa[3]);

String ss January ss[0] February ss[1] March ss[2] $ java Kadai41 January February March

String stars[]={" *, " ***, " *****, "******* ; * *** ***** ******* ***** *** *

* / % + - a = b * c ; a = b / c ; a = b % c ; a = b + c ; a = b - c ; a = 2 * 6 / 4 + 5 * ( 2 + 3 ) a = 12 / 4 + 5 * 5 a = 3 + 25

a = 7 / 3 ; b = 7 % 3 ; a b a b a b

++a; a++; a=a+1; --a; a--; a=a-1; b = a++; b = a; a = a+1; b = ++a; a = a+1; b = a; a += 3; a = a + 3; a *= 3; a = a * 3; -= /= %=

$ java reidai51 a, b a+b = 12 a-b = 4 a*b = 32 a/b = 2 public class Reidai51 { public static void main(string[] args) { int a=8;int b=4; System.out.println("a+b="+(a+b)); System.out.println("a-b="+(a-b)); System.out.println("a*b="+a*b); System.out.println("a/b="+a/b);

: System.out.println("a-b="+a-b); : "a-b="+a-b "a-b=8"-b

: System.out.println("a-b="+(a-b)); : "a-b="+(a-b) a-b= +4 "a-b=4

: System.out.println("a+b="+a+b); : a+b=84 "a+b="+a+b "a+b=8 +b a+b=84

: System.out.println("a+b="+(a+b)); : a+b=12 "a+b="+(a+b) "a+b= +12 a+b=12

: System.out.println("a*b="+a*b); : a*b=32 "a*b="+a*b "a*b= +32 a*b=32

: System.out.println("a/b="+a/b); : a/b=2 "a/b="+a/b "a/b= +2 a/b=2

a, b, c, d $ java kadai51 a*b = 20000 a*b+c = 20250 a*b+c*d = 145000 (a+b)*(c+d) = 225000 a+b*c+d = 50600 b/a+d/c = 4

java Input

import java.io.*; public class Input { public static void main(string[] args) throws IOException{ BufferedReader kbd = new BufferedReader(new InputStreamReader(System.in)); String ss = kbd.readline(); System.out.println(ss);

kbd BufferedReader kbd = new BufferedReader(new InputStreamReader(System.in)); kbd BufferedReader InputStreamReader System.in

kbd String ss = kbd.readline(); ss kbd.readline() BufferedReader kbd = new BufferedReader(new InputStreamReader(System.in)); String ss1 = kbd.readline(); String ss2 = kbd.readline();

BufferedReader java.io.bufferedreader public class Input { public static void main(string[] args) throws java.io.ioexception{ java.io.bufferedreader kbd = new java.io.bufferedreader( new java.io.inputstreamreader(system.in)); String ss = kbd.readline(); System.out.println(ss); java.io. import java.io.*; import java.io.*; :... BufferedReader... : :... java.io.bufferedreader... :

ss kbd.readline() IOException throws public static void main(string[] args) throws IOException{

d ss kbd.readline() String ss = kbd.readline(); int d = Integer.parseInt(ss); String ss = kbd.readline(); double f = Double.parseDouble(ss);

$ java Radai61 input number : 12 36 import java.io.ioexception; public class Reidai61 { public static void main(string[] args) throws IOException{ String ss; java.io.bufferedreader kbd = new java.io.bufferedreader( new java.io.inputstreamreader(system.in)); System.out.println("input number:"); ss = kbd.readline(); int d = Integer.parseInt(ss); System.out.println(d*3);

public final class DspInqueriesAction extends Action{ protected static Logger logger = Logger.getLogger(LoggingPlugIn.class.getName()); public ActionForward execute(actionmapping map, ActionForm form, HttpServletRequest request, HttpServletResponse response){ String inqueriesdirectory = this.servlet.getinitparameter("inquery-directory")+"inqueries/"; logger.fine("(1)inqueriesdirectory="+inqueriesdirectory); ArrayList inquerylist = new ArrayList(); ActionErrors errors = FileAccess.setInqueryListFromFile(inqueriesDirectory,inqueryList); if(errors.size()!=0){ saveerrors(request,errors); return map.findforward("fault"); request.setattribute("inquery.list",inquerylist.toarray()); return map.findforward("success");

if while for do-while switch break continue return

print 1 print 2 print 3 i=1,3 print i n>0 print n illegal

if if if( ) { ; else{ ;

if if( ){ { else{ int a=0; int b=0; if (a==0){ b=1; else{ b=2; System.out.println( b= +b); a b=1

x 5 if(x<=5){ <= >= > < if(x>=5){ if(x>5){ if(x<5){ x 5 x 5 x 5 x 5 if(x!=5){!= == if(x==5){ x 5

String ss abc if(ss== abc ){ String ss abc if(ss.equals( abc )){ s1 s2 if(s1.equals(s2)){ if(s2.equals(s1)){

boolean b; true,false int d;,-3,-2,-1,0,1,2,3, x=3; x<5 true

int x = 6; b boolean b = x>5; System.out.println("b="+b); b=true if(b){ System.out.println(" "); else{ System.out.println(" "); b==true

&& if(3<x && x<6){ x 3 x 6 if(x<5 6<x){ x 5 x 6! if(!(x<5 6<x)){ x 5 x 6

else if( ) { ; if(x>=1000){ x = x - 100;

else if if( 1){ else if( 2){ else if( 3){ else{

else if if(x>=10000){ x = x - 1000; else if(x>=5000){ x = x - 400; else if(x>=3000){ x = x - 100; else if(x>=1000){ x = x - 10;

import java.io.bufferedreader; import java.io.ioexception; import java.io.inputstreamreader; public class Kadai81 { public static void main(string[] args) throws IOException { BufferedReader kbd = new BufferedReader( new InputStreamReader(System.in)); System.out.println(" "); String ss = kbd.readline(); int d = Integer.parseInt(ss); if(d%2==0){ System.out.println(" "); else{ System.out.println(" ");

import java.io.ioexception; public class Reidai83 { public static void main(string[] args) throws IOException { java.io.bufferedreader kbd = new java.io.bufferedreader( new java.io.inputstreamreader(system.in)); System.out.println(" "); String ss = kbd.readline(); int d = Integer.parseInt(ss); String color=""; if(d%3==1){ color=" "; else if(d%3==2){ color=" "; else{ color=" "; System.out.println(color);

import java.io.ioexception; public class Reidai84 { public static void main(string[] args) throws IOException { java.io.bufferedreader kbd = new java.io.bufferedreader( new java.io.inputstreamreader(system.in)); System.out.println(" "); String ss = kbd.readline(); int d = Integer.parseInt(ss); if(d>=3000){ d *= 0.8; else if(d>=2000){ d *= 0.85; else if(d>=1000){ d *= 0.9; System.out.println(d);

import java.io.ioexception; public class Reidai85 { public static void main(string[] args) throws IOException { java.io.bufferedreader kbd = new java.io.bufferedreader( new java.io.inputstreamreader(system.in)); System.out.println(" (in,ft,yd) "); String unit = kbd.readline(); System.out.println(" "); String ss = kbd.readline(); double d = Double.parseDouble(ss); double mul=0; if(unit.equals("in")){ mul=2.54; else if(unit.equals("ft")){ mul=30.48; else if(unit.equals( yd")){ mul=91.44; else{ System.out.println("in,ft,yd "); return; System.out.println(mul*d+"cm");

double int

while while( ){

int a=3; while(a>0){ while while( ){ a System.out.println( a= +a); a--; a=3 a=2 a=1 a=a-1 a--;

for for( ; ; ){ o yes

for for( ){ while( ){ for(a=3;a>0;a--){ int a=3; while(a>0){ a--;

for for i for(int i=0;i<3;i++){ [ ] i<3 i=0 i=0 i++ i=1 i++ i=2 i++ i=3 i=0 i=1 i=2

for for i for(int i=0;i<3;i++){ System.out.println( i= +i); i<3 i=0 i=0 i++ i=1 i++ i=2 System.out. println ( i= +i); i=0 System.out. println ( i= +i); i=1 System.out. println ( i= +i); i=2 i=0 i=1 i=2

int dt[] = {30,50,15; int sum = 0; dt[0] for(int i=0;i<3;i++){ sum += dt[i]; System.out.println( sum= +sum); dt 30 50 15 dt[1] dt[2] i<3 i=0 i=0 i++ i=1 i++ i=2 sum =0 0 sum i=0 sum+=dt[i]; sum =30 30 sum i=1 sum+=dt[i]; sum =80 80 sum i=2 sum+=dt[i]; sum =95 95 sum sum =95 System out printl ( sum= +sum) sum=95 +=

for for for(int i=1;i<=3;i++){ System.out.println( i= +i) for(int j=1;j<=2;j++){ System.out.println ( j= +j+,i+j= +(i+j))

=1 =1 ++ =2 ++ =3 <=3 j=1 i=1 System. out. println ( i= +i); j=1 i=2 System. out. println ( i= +i); j=1 i=3 System. out. println ( i= +i); j=1 j++ j=2 j<=2 j=1 j=2 System.out.println ( j= +j+,i+j= +(i+j)); j=1 j++ j=2 j=1 j=2 System.out.println ( j= +j+,i+j= +(i+j)); j=1 j++ j=2 j=1 System.out.println ( j= +j+,i+j= +(i+j)); i=1 j=1,i+j=2 j=2,i+j=3 i=2 j=1,i+j=3 j=2,i+j=4 j=2 i=3 j=1,i+j=4

import java.io.*; public class EchoTwice { public static void main(string[] args) throws IOException { String ss; BufferedReader kbd = new BufferedReader(new InputStreamReader(System.in)); while((ss = kbd.readline())!= null){ System.out.println(ss+" "+ss); if(ss.equals("end")){ break; kbd.close();

while((ss = kbd.readline())!= null){ asd ss yz ss (ss = kbd.readline()) null asd asd yz yz

break while((ss = kbd.readline())!= null){ asd ss yz ss asd asd yz yz if(ss.equals("end")){ break;

break break for while for( ; ; ){ for( ; ; ){ if( ){ break; System.out.println( );

break LP_OUTER LP_OUTER:for( ; ; ){ for( ; ; ){ if( ){ break LP_OUTER; System.out.println( ); System.out.println( );

int dt[] = {5,4,12,23,7; 1. public class Reidai91 { 2. public static void main(string[] args) { 3. int dt[] = {5,4,12,23,7; 4. int max=dt[0]; 5. for(int i=1;i<dt.length;i++){ 6. if(max<dt[i]){ 7. max=dt[i]; 8. 9. 10. System.out.println(" ="+max); 11. 12.

3. int dt[] = {5,4,12,23,7; 4. int max=dt[0]; 5. for(int i=1;i<dt.length;i++){ 6. if(max<dt[i]){ 7. max=dt[i]; 8. 9. 0. System.out.println(" ="+max);

3. int dt[] = {5,4,12,23,7; 4. int max=dt[0]; 5. for(int i=1;i<dt.length;i++){ 6. if(max<dt[i]){ i=1 7. max=dt[i]; 8. 9. 6. if(max<dt[i]){ 7. max=dt[i]; 8. 6. if(max<dt[i]){ 7. max=dt[i]; 8. 6. if(max<dt[i]){ 7. max=dt[i]; 8. i=2 i=3 i=4 max 5 5 5 12 12 23 23 > < < > dt[i] 4 12 23 7

##### *#### **### ***## ****# ***** 1.public class Reidai92 { 2. public static void main(string[] args) { 3. for(int i=0;i<6;i++){ 4. for(int j=0;j<i;j++){ 5. System.out.print("*"); 6. 7. for(int j=0;j<5-i;j++){ 8. System.out.print("#"); 9. 10. System.out.println(""); 11. 12. 13.

* * 3. for(int i=0;i<6;i++){ 4. for(int j=0;j<i;j++){ 5. System.out.print("*"); 6. 10. System.out.println(""); 11. j=0 j=1 j=2 j=3 j=4 i=3 i=0 j=0,1,2 i=1 * i=2 i=3 i=4 i=5 4. for(int j=0;j<3;j++){ 5. System.out.print("*"); 6. * * * * * * * * * * * * * * *

# i # 5-i i=0 i=1 ##### *#### **### ***## ****# ***** = 5-i = 5-0 = 5-i = 5-1 i=2 = 5-i = 5-2 i=3 = 5-i = 5-3 i=4 = 5-i = 5-4 i=5 = 5-i = 5-5 # 0 5-i 3. for(int i=0;i<6;i++){ 7. for(int j=0;j< 5-i ;j++){ 8. System.out.print("#"); 9. 10. System.out.println(""); 11.

1:import java.io.ioexception; 2:public class Reidai93 { 3: public static void main(string[] args) throws IOException { 4: String unit,ss; 5: java.io.bufferedreader kbd 6: = new java.io.bufferedreader( 7: new java.io.inputstreamreader(system.in)); 8: String ssout=""; 9: System.out.println(" "); 0: while((ss = kbd.readline())!=null){ 1: int d=integer.parseint(ss); 2: for(int i=0;i<d;i++){ 3: ssout+=" "; 4: 5: if(ssout.length()>10){ 6: System.out.println(" "); 7: break; 8: 9: System.out.println(ssout); 0: 1:

public class Reidai81 { publlc static void main(string[] args) { for(int i=0;i<=100;i++){ if((i%16==0) (i%24==0)){ System.out.println(i);

double dt[] = {172.3,168.5,177.8,181.5,174.8; * *** ***** ******* ***** *** *

abced $ java Kadai93 abc abc ed ccc abcedccc clear xyz xyz end good bye.

int[] months={31,28,31,30,31,30,31,31,30,31,30,31;

String[] days={" "," "," "," "," "," "," ",;

nt x=0 nt y=3; nt z=5; = z-y; ystem.out.println( x= +x); int x=0 int y=3; int z=5; x = z-y; System.out.println( x= +x);

{ public class Hello{ public static void main(string args[]){ int sum = 0; for(int i=0;i<10;i++){ if((i % 2) ==0){ sum += i; System.out.println( sum= +sum);

{ public class Hello{ public static void int sum = 0; for(int i=0;i<1 if((i % 2) sum += System.out.prin

{ int a; { int b; { int c; { int a; int a;

str public class Rei102 { public static void main(string[] args) { int[] dec={1,2,3,4,5,; for(int i=0;i<dec.length;i++){ if(dec[i]%2==0){ String str=dec[i]+" "; System.out.println(str);

1. public class Rei102 { 2. public static void main(string[] args) { 3. int[] dec={1,2,3,4,5,; 4. for(int i=0;i<dec.length;i++){ 5. String str; 6. if(dec[i]%2==0){ 7. str=dec[i]+" "; 8. 9. System.out.println(str); 10. 11. 12. 5. String str=null;

null null while((ss = kbd.readline())!= null){ null null

break break for while if for while BK_1 BK_1:{ break BK_1; System.out.println( );

System.out.println(" "); String ss = kbd.readline(); BK_1:{ for(int i=0;i<ss.length();i++){ if(ss.charat(i)=='a'){ break BK_1; System.out.println(" "a " ");

for break for System.out.println( "); String ss = kbd.readline(); BK_1:{ for(int i=0;i<ss.length();i++){ if(ss.charat(i)=='a'){ break BK_1; BK_1 System.out.println( ");

String ss = kbd.readline(); boolean noa=true; for(int i=0;i<ss.length();i++){ if(ss.charat(i)=='a'){ noa=false; break; if(noa){ System.out.println(" "a " ");

double dt[] = {172.3,168.5,177.8,181.5,174.8;

t[3][4] dt[0] dt[1] dt[2] 10 25 5 5 dt[0][0] dt[0][1] dt[0][2] dt[0][3] 15 5 12 dt[1][0] dt[1][1] dt[1][2] dt[1][3] 9 6 15 dt[2][0] dt[2][1] dt[2][2] dt[2][3] 8 11

int dt[][]; dt = new int[2][]; dt[0] = new int[3]; dt[1] = new int[3]; dt[1][1]=25; dt[][] dt[2][] dt[0] dt[1] dt[2][3] dt[0] dt[1] dt[2][3] dt[0] dt[1] dt[2][3] dt[0][0] dt[0][1] dt[0][2] dt[0][0] dt[0][1] dt[0][2] dt[1][0] dt[1][1] dt[1][2] dt[0] dt[0][0] dt[0][1] dt[0][2] 25 dt[1] dt[1][0] dt[1][1] dt[1][2]

int dt[][] = new int[2][]; dt[0] = new int[3]; dt[1] = new int[3]; dt[1][1] = 25; int dt[][]; dt = new int[2][3]; dt[1][1] = 25; int dt[][] = new int[2][3]; dt[1][1] = 25;

int dt[][] = { {10,25, 5, 5, {15, 5,12, 8, { 9, 6,15,11, ; dt[3][4] dt[0] 10 dt[0][0] 25 dt[0][1] 5 dt[0][2] 5 dt[0][3] dt[1] 15 dt[1][0] 5 dt[1][1] 12 dt[1][2] 8 dt[1][3] dt[2] 9 dt[2][0] 6 dt[2][1] 15 dt[2][2] 11 dt[2][3]

int dt[][] = { {10,25, {15, { 9, 6,15,11, ; dt[3][4] dt[0] dt[1] dt[2] 10 25 dt[0][0] dt[0][1] 15 dt[1][0] 9 6 15 11 dt[2][0] dt[2][1] dt[2][2] dt[2][3] int dt[][] = new int[3][]; int dt[0] = new int[2]; int dt[1] = new int[1]; int dt[2] = new int[4]; dt.length -> dt[0].length -> dt[1].length -> dt[2].length ->

String directions[][]={ "," "," ",, "," "," ",, "," "," ",, {" {" {" ; ublic class Reidai111 { public static void main(string[] args) { String directions[][]={ {" "," "," ",, {" "," "," ",, {" "," "," ",, ; for(int i=0;i<directions.length;i++){ for(int j=0;j<directions[i].length;j++){ System.out.print(directions[i][j]+" "); System.out.println("");

$ java Kadai112 input A,B or C : A A A A AAAAA A A

1:import java.io.ioexception; 2:public class Reidai1121 { 3: public static void main(string[] args) 4: throws IOException { 5: String hana[][]={ 6: { 7: " A", 8: " A A", 9: " AAAAA", 0: "A A", 1:, 2: { 3: "BBBBB", 4: "B B", 5: "BBBBB", 6: "B B", 7: "BBBBB", 8:, // C 9: ;

0: java.io.bufferedreader kbd 1: = new java.io.bufferedreader( 2: new java.io.inputstreamreader(system.in)); 3: System.out.println("input A, B or C:"); 4: String ss = kbd.readline(); 5: if(ss.equals("a")){ 6: for(int i=0;i<hana[0].length;i++){ 7: System.out.println(hana[0][i]); 8: 9: else if(ss.equals("b")){ 0: for(int i=0;i<hana[1].length;i++){ 1: System.out.println(hana[1][i]); 2: 3: else if(ss.equals("c")){ 4: for(int i=0;i<hana[2].length;i++){ 5: System.out.println(hana[2][i]); 6: 7: else{ 8: System.out.println( A,B,C "); 9: 0: 1:

hana[][] hana[0] hana[1] hana[2] A A A AAAAA A A hana[0][0] hana[0][1] hana[0][2] hana[0][3] BBBBB B B BBBBB B B BBBBB hana[1][0] hana[1][1] hana[1][2] hana[1][3] hana[1][4] CCCC C C C C C CCCC hana[2][0] hana[2][1] hana[2][2] hana[2][3] hana[2][4] : else if(ss.equals( B")){ for(int i=0;i<hana[1].length;i++){ System.out.println(hana[1][i]);

26: for(int i=0;i<hana[0].length;i++){ 27: System.out.println(hana[0][i]); 28: 30: for(int i=0;i<hana[1].length;i++){ 31: System.out.println(hana[1][i]); 32: 34: for(int i=0;i<hana[2].length;i++){ 35: System.out.println(hana[2][i]); 36:

1:import java.io.ioexception; 2:public class Reidai1121 { 3: public static void main(string[] args) 4: throws IOException { 5: String hana[][]={ // 6: ; 7: java.io.bufferedreader kbd 8: = new java.io.bufferedreader( 9: new java.io.inputstreamreader(system.in)); 0: System.out.println("input A, B or C:"); 1: String ss = kbd.readline(); 2: int ichar=0; 3: if(ss.equals("a")){ 4: ichar=0; 5: else if(ss.equals("b")){ 6: ichar=1; 7: else if(ss.equals("c")){ 8: ichar=2; 9: else{ 0: System.out.println( A,B,C "); 1: return; 2: 3: for(int i=0;i<hana[ichar].length;i++){ 4: System.out.println(hana[ichar][i]); 5: 6: 7:

ichar 12: int ichar=0; 13: if(ss.equals("a")){ 14: ichar=0; 15: else if(ss.equals("b")){ 16: ichar=1; 17: else if(ss.equals("c")){ 18: ichar=2; 19: else{ 20: System.out.println( A,B,C "); 21: return; 22: ichar na[3][5] hana[1] BBBBB B B BBBBB B B BBBBB hana[1][0] hana[1][1] hana[1][2] hana[1][3] hana[1][3] 3: for(int i=0;i<hana[ichar].length;i++){ 4: System.out.println(hana[ichar][i]); 5: ichar

if(ss.equals("a")){ ichar=0; else if(ss.equals("b")){ ichar=1; else if(ss.equals("c")){ ichar=2; else if(ss.equals( D")){ ichar=3; else if(ss.equals( E")){ ichar=4; :( ) else if(ss.equals( Z")){ ichar=26; else{ :

1:import java.io.ioexception; 2:public class Reidai1121 { 3: public static void main(string[] args) 4: throws IOException { 5: String hana[][]={ // 6: ; 7: String[] index={"a","b","c",; 8: java.io.bufferedreader kbd 9: = new java.io.bufferedreader( 0: new java.io.inputstreamreader(system.in)); 1: System.out.println("input A, B or C:"); 2: String ss = kbd.readline(); 3: int ichar=-1; 4: for(int i=0;i<hana.length;i++){ 5: if(ss.equals(index[i])){ 6: ichar=i; 7: break; 8: 9: 0: if(ichar==-1){ 1: System.out.println( A,B,C "); 2: return; 3: 4: for(int i=0;i<hana[ichar].length;i++){ 5: System.out.println(hana[ichar][i]); 6: 7:

7: String[] index={"a","b","c",; 2: String ss = kbd.readline(); 4: for(int i=0;i<hana.length;i++){ 15: if(ss.equals(index[i])){ i=0 16: ichar=i; 17: break; 18: 15: if(ss.equals(index[i])){ i=1 16: ichar=i; 17: break; 18: 9: 4: //ichar=1 index[i] A ss B == B B == B

int dt[][] = { {10,25, 5, 5, {15, 5,12, 8, { 9, 6,15,11, ;

char yama0[][]={ { *, *, { *, *, { *, *, *, *, { *, *, *, { *, *, *, *, ; char yama1[][]={ { *, *, *, *, *, { *, *, *, { *, *, { *, *, *, *, { *, *, ;

public static void main(string args[]) public class Hello{ public static void main(string args[]){ System.out.println("Hello, world.");

ublic class PrintLines { public static void main(string[] args) { repeatstr("xy",3); repeatstr("yz",2); repeatstr("z ",3); public static void repeatstr(string s, int n){ for(int i=0;i<n;i++){ System.out.print(s); System.out.println(""); xyxyxy yzyz z z z

// repeatstr("xy",3); // public static void repeatstr(string s, int n){ // void public static

public static void main(string[] args) { repeatstr("xy",3); repeatstr("yz",2); repeatstr("z ",3); public static void repeatstr(string s, int n){ s= xy ; s= yz ; s= z ; n=3; n=2; n=3; for(int i=0;i<n;i++){ System.out.print(s); System.out.println(""); xyxyxy yzyz

public class FactorEx { public static void main(string[] args) { int x = calfactor(4); System.out.println(x); x = calfactor(5); System.out.println(x); int 24 120 public static int calfactor(int a){ int fac = 1; for(int i=1;i<=a;i++){ fac *= i; return fac;

void return public static void repeatstr(string s, int n){ // return;

public class PrintLines { public static void main(string[] args) { for(int i=0;i<3;i++){ System.out.print( xy ); System.out.println(""); for(int i=0;i<2;i++){ System.out.print( yz ); System.out.println(""); for(int i=0;i<3;i++){ System.out.print( z ); System.out.println("");

public class RepeatStr { public static void main(string[] args){ String str = args[0]; int n = Integer.parseInt(args[1]); for(int i=0;i<n;i++){ System.out.println(str);

args[] args[] main(string args[]){ String str = args[0]; int n = Integer.parseInt(args[1]); args[] args.length

**### ***## ****# ***** pulic static void drawsyms(int w, String s) public class Reidai121 { public static void main(string[] args) { for(int i=0;i<6;i++){ drawsyms(i,"#"); drawsyms(5-i,"*"); System.out.println(""); ##### *#### private static void drawsyms(int w,string s){ for(int i=0;i<w;i++){ System.out.print(s);

ublic class Reidai121 { public static void main(string[] args) { int d = Integer.parseInt(args[0]); for(int i=0;i<d+1;i++){ drawsyms(i,"#"); drawsyms(d-i,"*"); System.out.println(""); private static void drawsyms(int w,string s){ for(int i=0;i<w;i++){ System.out.print(s);

****#**** ***###*** **#####** *#######* **#####** ***###*** ****#****

$ java Kadai123 & = ====&==== ===&&&=== ==&&&&&== =&&&&&&&= ==&&&&&== ===&&&=== ====&====

abcd str equals(string) ss abc if(ss.equals( abc )){ s1 s2 if(s1.equals(s2)){ if(s2.equals(s1)){

charat() String str = akira ; char c = str.charat(2); // c i i c 01 23 4 a k i r a length() String str = akira ; int n = str.length(); // n n 5 akira str akira str

substring(int) String str = 01234567 ; String s1 = str.substring(4); // s1 4567 4567 s1 01234567 str substring(int,int) String str = 01234567 ; String s1 = str.substring(4,6); // s1 45 45 s1 01234567 str

indexof(string) String str = 0123ab6 ; int n = str.indexof( ab ); // n int n = str.indexof( cd ); // n -1 replace(char,char) n 4 0123ab6 str String str = katakata ; String s1 = str.replace( a, o ); // s1 kotokoto kotokoto s1 katakata str

true if(character.isdigit(ch)){ //ch 4 ch false j ch if(character.isletter(ch)){... //ch if(character.isuppercase(ch)){... //ch if(character.iswhilespace(ch)){... //ch har cha = a ; char chb = B ; har cha2 = Character.toUpperCase(cha); har chb2 = Character.toLowerCase(chb); / cha2 A chb2 b A cha2 a cha

d ss d = Integer.parseInt(ss); f = Double.parseDouble(ss);

d=integer.parseint(s); String) s= +d; 212 s d=character.digit(c,10); (char) (int) d 10 f=d; d=(int)f; (double) f=double.parsedouble(s); s= +f; s= +c; c=s.charat(0); c=character.fordigit(d,10); 3.14 f 4 c

$ java Kadai131 input string : I refused him absolutely. a:1, i:0, u:2, e:3, o:1

char vowel[] = { a, i, u, e, o ; int counter[] = {0,0,0,0,0; $ java Kadai134 input string : 23fjaksi55f 8989da 23558989

java CatFile test.txt aaaaa bbbbb cccc

import java.io.*; public class CatFile { public static void main(string[] args) throws IOException { String filename = args[0]; String ss; BufferedReader fin = new BufferedReader( new FileReader(fileName)); while((ss = fin.readline())!=null){ System.out.println(ss); fin.close();

fin fin BufferedReader fin = new BufferedReader( new FileReader(fileName)); BufferedReader FileReader

fin ss ss = fin.readline() fin.readline() String ss1,ss2; BufferedReader fin = new BufferedReader(new FileReader(fileName)); ss1 = fin.readline(); ss1 = fin.readline();

while((ss = fin.readline())!= null){ aaaaa ss aaaaa bbbbb ss bbbbb cccc ss cccc (ss = fin.readline()) null

fin : // fin.close(); fin fin fin

String ss; BufferedReader fin = new BufferedReader(new FileReader(fileName)); ss = fin.readline(); ss = new String(ss.getBytes("iso-8859-1"),"JISAutoDetect");

A 12 B 28 C 20 $ java Kadai142 test.txt A ************ B **************************** C ******************** +---------+---------+---------+ 0 10 20 30

Abc Abc 1234 12345 def def 5678 5678 ghi ghijk 910 910 $ java Kadai143 test1.txt test2.txt Abc def 5678 910

#java WriteFile #cat test1.txt test1.txt abcdefg 3.14

mport java.io.*; ublic class WriteFile { public static void main(string[] args) throws IOException { PrintWriter fout = new PrintWriter( new BufferedWriter( new FileWriter("test15.txt"))); fout.println("abcdefg"); fout.println(" "+3.14); fout.close();

fout PrintWriter fout = new PrintWriter( new BufferedWriter( new FileWriter("test1.txt"))); fout fout PrintWriter BufferedWriter FileWriter Test1.txt

fout fout.println( abcdefg ); Test1.txt abcdefg fout PrintWriter

$ java Kadai152 input file name: test152.txt input lines:. test.152.txt

$ java Kadai153 test1.txt test2.txt Abc 1234 Abc1234 def 5678 def5678 ghi910 ghi 910

Abc 1234 Abc def 5678 1234dEf 5678ghi910 ghi 910

int i=4; aa[i]=3; 10 25 5 aa[0] aa[1] aa[2] public final class DspInqueriesAction extends Action{ protected static Logger logger = Logger.getLogger(LoggingPlugIn.class.getName()); public ActionForward execute(actionmapping map, ActionForm form, HttpServletRequest request, HttpServletResponse response){ String inqueriesdirectory = this.servlet.getinitparameter("inquery-directory")+"inqueries/"; logger.fine("(1)inqueriesdirectory="+inqueriesdirectory); ActionErrors errors = FileAccess.setInqueryListFromFile(inqueriesDirectory,inqueryList); if(errors.size()!=0){ saveerrors(request,errors); return map.findforward("fault"); request.setattribute("inquery.list",inquerylist.toarray()); return map.findforward("success"); aa

try{ // // catch(exception e){ // // public static void xx() // throws Exception{ xx(); // // (throws)

import java.io.*; public class Input { public static void main(string[] args) { : ss = kbd.readline(); : eclipse Input.java:21: java.io.ioexception ss = kbd.readline(); ^

port java.io.*; blic class CatFile { public static void main(string[] args){ String filename = args[0]; String ss; BufferedReader fin = null; try{ fin = new BufferedReader(new FileReader(fileName)); while((ss = fin.readline())!=null){ System.out.println(ss); fin.close(); catch(exception e){ System.out.println(" ("+filename + ) ); System.out.println("e="+e);

java CatFile test2.txt try{ catch{ import java.io.*; public class CatFile { public static void main(string[] args){ String filename = args[0]; String ss; BufferedReader fin = null; try{ fin = new BufferedReader(new FileReader(fileName)); while((ss = fin.readline())!=null){ System.out.println(ss); fin.close(); catch(exception e){ System.out.println(" ("+filename + ) ); System.out.println("e="+e);

Exception e catch(exception e){ : System.out.println("e="+e); e System.out.println("e="+e); e

e.printstacktrace(); e

import java.io.*; public class CatFile2 { public static void main(string[] args) { String filename = args[0]; try { fileaccess(filename); catch (Exception e) { System.out.println(" ("+filename +") "); System.out.println("e="+e); public static void fileaccess(string filename) throws Exception { BufferedReader fin; fin = new BufferedReader(new FileReader(fileName)); String ss; while((ss = fin.readline())!=null){ System.out.println(ss); fin.close();

fileaccess public static void main(string[] args) { : try { // // // // try fileaccess(filename); catch (Exception e) { // // catch public static void fileaccess (String filename) throws Exception { // //

Exception ClassNotFoundException IOException FileNotFoundException ObjectStreamException EOFException

try { : catch (FileNotFoundException e) { // System.out.println(" ("+filename +") "); catch (IOException e) { // FileNotFoundException // System.out.println(" ("+filename +") "); Exception

NumberFormatException d 2SB ss ss = kbd.readline(); d = Integer.parseInt(ss); kbd.readline() NumberFormatException

String flist[].project ListFiles.class ListFiles.java flist[0] flist[1] flist[2]

import java.io.file; public class ListFiles { public static void main(string[] args) { try{ File dir = new File("."); String flist[] = dir.list(); if(flist==null){ System.out.println(" "); return ; for(int i=0;i<flist.length;i++){ System.out.println(flist[i]); catch(exception e){ System.out.println(" e="+e); $ java ListFiles.project ListFiles.class ListFiles.java

File dir = new File("."); dir String flist[] = dir.list(); String flist[].project ListFiles ListFil.class es flist[0] flist[1] flist[2].java dir

$ java Kadai172 C: eclipse abc abcedf.txt abcok.java

String flist[] flist[0] flist[1] example flist[2] for(int i=0;i<flist.length;i++){ a b if((new File(. +flist[i])).isfile()){ // System.out.println(flist[i]);