Java ArrayList remove()方法
java.util.ArrayList.remove(Object) 该方法用于从ArrayList删除指定元素。
1 语法
public boolean remove(Object o)
2 参数
o:要从ArrayList中删除的元素(如果存在)。
3 返回值
如果ArrayList包含指定的元素,则此方法返回true,否则ArrayList保持不变。
4 示例
package com.yiidian;
/**
* 一点教程网: http://www.yiidian.com
*/
/**
* java.util.ArrayList.remove(Object)方法的例子
*/
import java.util.ArrayList;
public class Demo {
public static void main(String[] args) {
// create an empty array list with an initial capacity
ArrayList<String> arrlist = new ArrayList<String>(5);
// use add() method to add values in the list
arrlist.add("G");
arrlist.add("E");
arrlist.add("F");
arrlist.add("M");
arrlist.add("E");
System.out.println("Size of list: " + arrlist.size());
// let us print all the values available in list
for (String value : arrlist) {
System.out.println("Value = " + value);
}
// Removes first occurrence of "E"
arrlist.remove("E");
System.out.println("Now, Size of list: " + arrlist.size());
// let us print all the values available in list
for (String value : arrlist) {
System.out.println("Value = " + value);
}
}
}
输出结果为:
Size of list: 5
Value = G
Value = E
Value = F
Value = M
Value = E
Now, Size of list: 4
Value = G
Value = F
Value = M
Value = E
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