Vector Vector Vector Vector() Vector(int n) n Vector(int n,int delta) n delta

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1 Java VectorEnumeration Stack Hashtable StringTokenizer

2 Vector Vector Vector Vector() Vector(int n) n Vector(int n,int delta) n delta

3 Vector Vector void addelement(object obj) int capacity() Object clone() boolean contains(object obj) void copyinto(object array[]) Object elementat(int index) Enumeration elements() void ensurecapacity(int minimum) Object firstelement() int indexof(object obj) int indexof(object objn,int index) obj obj array index minimum obj obj obj-1 index obj obj Obj-1 void insertelementat(object obj,int index) obj index

4 Vector3 Vector boolean isempty() Object lastelement() int lastindexof(object obj) int lastindexof(object obj,int index) void removeallelements() boolean removeelement(object obj) void removeelementat(int index) void setelementat(object obj,int index) void setsize(int size) int size() String tostring() void trimtosize() obj obj obj-1 index obj obj obj-1 obj Index Indexobj size size

5 Enumeration Enumeration Enumeration hasmoreelements() boolean hasmoreelements() nextelement() Object nextelement() hasmoreelements() nextelement()

6 VectorEnumeration VectorEnumeration import java.util.*; class EnumerationDemo{ public static void main(string args[]){ // Vector vector =new Vector(); vector.addelement(new Integer(5)); vector.addelement(new Float( f)); vector.addelement(new String( Hello )); // Enumeration e=vector.elements(); while(e.hasmoreelements()){ Object obj=e.nextelement(); System.out.println(obj); f Hello

7 VectorEnumeration VectorDemo.java Vector -Xlint Object <Object> Vector<Object> vector=new Vector<Object>();

8 Stack Stack VectorLIFO ( ) boolean empty() Object peek() throws EmptyStackException Object pop() throws EmptyStackException Object push(object obj) int search(object obj) objobj obj obj -1 obj

9 Stack Stack import java.util class PushPop{ public static void main(string args[]){ // Stack stack=new Stack(); // for(int i=0;i<args.length;i++) stack.push(new Integer(args[i])); // while(!stack.empty()){ Object obj=stack.pop(); System.out.println(obj); >java PushPoP

10 Hashtable Hashtable Hashtable Hashtable() Hashtable(int n) Hashtable(int n,float lf) n: lf: (load factor: lf0~1

11 Hashtable Hashtable void clear() boolean contains(object v) throws NullPointerException boolean containskey(object k) boolean containsvalue(object v) Enumeration elements() Object get(object k) boolean isempty() Enumeration keys() Object put(object k,object v) throws NullPointerException Object remove(object k) int size() String tostring() v v null NullPointerException k v k / k v k v nullnullpointerexception K/

12 Hashtable3 Hashtable import java.util.*; class HashtanleDemo{ public static void main(string args[]){ // Hashtable hashtable=new Hashtable(); hashtable.put( apple, red ); hashtable.put( strawberry, red ); hashtable.put( lime, green ); hashtable.put( banana, yellow ); hashtable.put( orange, orange ); // Enumeration e=hashtable.keys(); while(e.hasmoreelements()){ Object k=e.nextelement(); Object v=hashtable.get(k); System.out.println( key= +k+ ;value= +v); //apple System.out.print( \nthe color of an apple is: ); Object v=hashtable.get( apple ); System.out.println(v);

13 Hashtable4 Hashtable key=banana;value=yellow key=apple;value=red key=orange;value=orange key=lime;value=green key=strawberry;value=red The color of an apple is:red JVM Hashtable<String,String>hashtable=new Hashtable<String,String>();

14 StringTokenizer StringTokenizer StringTokenizer StringTokenizer(String str) StringTokenizer(String str,string delimiters) StringTokenizer(String str,string delimiters,boolean delimitersaretokens) str: delimiters: delimitersaretokens delimitersaretokens

15 StringTokenizer StringTokenizerEnumeration StringTokenizer int counttokens() boolean hasmoretokens() String nexttoken() String nexttoken(string delimiters) delimiters

16 StringTokenizer3 StringTokenizer import java.util.*; class StringTokenizerDemo{ public static void main(string args[]){ String str= 123/45.6/-11.2/100/-20 ; StringTokenizer st=new StringTokenizer(str, / ); while(st.hasmoretokens()){ String s=st.nexttoken(); 123 System.out.println(s);

17 A Z Stack >java / 10.0 >java

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Microsoft Word - keisankigairon.ch doc 1000000100001010 1000001000001011 0100001100010010 1010001100001100 load %r1,10 load %r2,11 add %r3,%r1,%r2 store %r3,12 k = i + j ; = > (* 1 2 3 4 5 6 7 8 9 10) 3628800 DO 3 I=1,3 DO3I=1.3 DO3I 1.3