removeRange(int fromIndex,int toIndex) 方法用于删除列表索引fromIndex(包括)和为toIndex(不包括)之间的所有元素。

声明

以下是java.util.Vector.removeRange()方法的声明

protected void removeRange(int fromIndex,int toIndex)

参数

• fromIndex --这是要移除的第一个元素的索引。

• toIndex --这是要去除最后一个元素之后的索引

返回值

NA

异常

• NA

例子

下面的例子显示java.util.Vector.removeRange()方法的使用。

package com.yiibai;

import java.util.Vector;

public class VectorDemo {
   public static void main(String[] args) {
      // create an empty Vector vec with an initial capacity of 7      
      Vector vec = new Vector(7);

      // use add() method to add elements in the vector
      vec.add(1);
      vec.add(2);
      vec.add(3);
      vec.add(4);
      vec.add(5);
      vec.add(6);
      vec.add(7);

      /**
       * Removing range of elements is not directly supported. However, it
       * can be done by using subList and clear methods.
      */
      System.out.println("Remove elements from 2nd to 4th");
      vec.subList(2,4).clear();
      
      // let us print all the elements available in vector
      System.out.println("Numbers after removal :- "); 
      for (Integer number : vec) {         
         System.out.println("Number = " + number);
      }           
   }    
} 

现在编译和运行上面的代码示例，将产生以下结果。

Remove elements from 2nd to 4th
Numbers after removal :- 
Number = 1
Number = 2
Number = 5
Number = 6
Number = 7