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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		List<String> list = new LinkedList<String>();
  13. 		list.add("a");
  14. 		list.add("b");
  15. 		list.add("c");
  16.     	System.out.println("遍历list值");
  17.    		System.out.println("size:"+list.size());
  18.  
  19.         for( Iterator   it = list.iterator();  it.hasNext(); )
  20.         {             
  21.             System.out.println("value="+it.next());            
  22.         } 
  23. 		System.out.println("删除a");
  24. 		list.remove("a");
  25. 		System.out.println("size:"+list.size());
  26.  
  27.         for( Iterator   it = list.iterator();  it.hasNext(); )
  28.         {             
  29.             System.out.println("value="+it.next());            
  30.         } 
  31. 		System.out.println("修改b");	
  32. 		list.set(0, "B");// 将索引位置为1的对象e修改为对象b		
  33. 		System.out.println("size:"+list.size());
  34.  
  35.         for( Iterator   it = list.iterator();  it.hasNext(); )
  36.         {             
  37.             System.out.println("value="+it.next());            
  38.         } 
  39. 	}
  40. }
Success #stdin #stdout 0.04s 4386816KB
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Standard input is empty
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遍历list值
size:3
value=a
value=b
value=c
删除a
size:2
value=b
value=c
修改b
size:2
value=B
value=c
https://ideone.com/p0rjAt
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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