example31.java

来自「Java面向对象编程(随书配套源代码) 阐述了面向对象编程的思想」· Java 代码 · 共 46 行

/**
 * 专家导学：Java面向对象编程
 */
package chapter3;

import java.util.Collection;

/**
 * @author Administrator
 *
 */
public class example31 {

	void printCollection(Collection<?> c) 
	{
		  for(Object e : c)
		  {
		    System.out.println(e);
		}
	}

	public static void main(String args[])
	 { 
	    TestGen0<String,String> t=new TestGen0<String,String>(); 
	    t.put("key", "value"); 
	    String s=t.get("key"); 
	    System.out.println(s); 
	    
	    TestGen0<Integer,String> t1=new TestGen0<Integer,String>(); 
	    t1.put(1, "value"); 
	    String s2=t1.get(1); 
	    System.out.println(s2); 
	    
	    t1.put("dd", "value"); 
	    String s3=t1.get(1); 
	    System.out.println(s2); 
	    
	    Collection
	    
	    
	 } 
	
	
	
}