void addElement(E obj)
描述 (Description)
addElement(E obj)方法用于将specified component to the end of this vector添加specified component to the end of this vector并将其大小增加一。 如果该载体的大小大于其容量,则该载体的容量会增加。 此addElement()方法在功能上与add(Object)方法相同。 add()方法返回true/false但addElement()方法does not return any value 。
声明 (Declaration)
以下是java.util.Vector.addElement()方法的声明
public void addElement(E obj)
参数 (Parameters)
obj - 它指的是要添加的组件。
返回值 (Return Value)
返回类型void
异常 (Exception)
NA
例子 (Example)
以下示例显示了java.util.Vector.addElement(E obj)方法的用法。
package com.iowiki;
import java.util.Vector;
public class VectorDemo {
public static void main(String[] args) {
// create an empty Vector vec with an initial capacity of 4
Vector<Integer> vec = new Vector<Integer>(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("Initial elements in the vector :- ");
for (Integer number : vec) {
System.out.println("Number = " + number);
}
// add new element
vec.addElement(12);
// let us print all the elements again after addition
System.out.println("Elements after addition :- ");
for (Integer number : vec) {
System.out.println("Number = " + number);
}
}
}
让我们编译并运行上面的程序,这将产生以下结果。
Initial elements in the vector :-
Number = 4
Number = 3
Number = 2
Number = 1
Elements after addition :-
Number = 4
Number = 3
Number = 2
Number = 1
<b class="notranslate">Number = 12</b>