removeAllElements()%uA0方法被用来从这个向量中取出所有组件，并设置其大小设置为零。此方法是在功能上与clear ()方法相同。
声明
以下是java.util.Vector.removeAllElements()方法的声明
public void removeAllElements()
参数
-
NA
返回值
NA
异常
-
NA
例子
下面的例子显示java.util.Vector.removeAllElements()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 4 Vectorvec = new Vector (4) // use add() method to add elements in the vector vec.add(4) vec.add(3) vec.add(2) vec.add(1) // let us print all the elements available in vector System.out.println("Added numbers are :- ") for (Integer number : vec) { System.out.println("Number = " + number) } System.out.println("Size of the vector: "+vec.size()) System.out.println("Removing all elements") // lets remove all the elements vec.removeAllElements() System.out.println("Now size of the vector: "+vec.size()) } }
现在编译和运行上面的代码示例，将产生以下结果。
Added numbers are :- Number = 4 Number = 3 Number = 2 Number = 1 Size of the vector: 4 Removing all elements Now size of the vector: 0