public class hashtable {
public static void main(String[] args){
Hashtable<String,Integer>number = new Hashtable<String,Integer>();
number.put("one",1);
number.put("two",2);
number.put("three",3);
Integer n=number.get("two");
if (n!=null){
System.out.println("two="+n);
}
}
}
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Set;
public class hashtable {
public static void main(String[] args){
Hashtable<String,String>hm=new Hashtable<String,String>();
hm.put("001","zhangshan");
hm.put("002","lishi");
hm.put("003","wangwu");
Set<String> keySet=hm.keySet();
Iterator<String> it=keySet.iterator();
while (it.hasNext())
{
String num=it.next();
String value=hm.get(num);
System.out.println(num+":"+value);
}
}
}
003:wangwu
002:lishi
001:zhangshan
public static void main(String[] args){
Hashtable<String,Integer>number = new Hashtable<String,Integer>();
number.put("one",1);
number.put("two",2);
number.put("three",3);
Integer n=number.get("two");
if (n!=null){
System.out.println("two="+n);
}
}
}
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Set;
public class hashtable {
public static void main(String[] args){
Hashtable<String,String>hm=new Hashtable<String,String>();
hm.put("001","zhangshan");
hm.put("002","lishi");
hm.put("003","wangwu");
Set<String> keySet=hm.keySet();
Iterator<String> it=keySet.iterator();
while (it.hasNext())
{
String num=it.next();
String value=hm.get(num);
System.out.println(num+":"+value);
}
}
}
003:wangwu
002:lishi
001:zhangshan
本文转自 vfast_chenxy 51CTO博客，原文链接：http://blog.51cto.com/chenxy/787873，如需转载请自行联系原作者
