java中的remove函数,Java ConcurrentSkipListSet remove()用法及代码示例

java.util.concurrent.ConcurrentSkipListSet.remove()方法是Java中的内置函数，用于删除元素(如果此集合中存在)。

用法:

ConcurrentSkipListSet.remove(Object o)

参数：该函数接受单个参数，即要删除的对象。

返回值：成功删除对象后，该函数将返回true布尔值，否则返回false。

以下示例程序旨在说明ConcurrentSkipListSet.remove()方法：

示例1:集合中存在要删除的元素。

// Java Program Demonstrate remove()

// method of ConcurrentSkipListSet

import java.util.concurrent.ConcurrentSkipListSet;

class ConcurrentSkipListSetRemoveExample1 {

public static void main(String[] args)

{

// Initializing the set

ConcurrentSkipListSet set =

new ConcurrentSkipListSet();

// Adding elements to this set

for (int i = 1; i <= 5; i++)

set.add(i);

// Printing the elements of the set

System.out.println("The elements in the set are:");

for (Integer i : set)

System.out.print(i + " ");

// remove() method will remove the specified

// element from the set

set.remove(1);

set.remove(5);

// Printing the elements of the set

System.out.println("nRemaining elements in set : ");

for (Integer i : set)

System.out.print(i + " ");

}

}

输出：

The elements in the set are:

1 2 3 4 5

Remaining elements in set :

2 3 4

示例2:集合中不存在要删除的元素。

// Java Program Demonstrate remove()

// method of ConcurrentSkipListSet

import java.util.concurrent.ConcurrentSkipListSet;

class ConcurrentSkipListSetRemoveExample2 {

public static void main(String[] args)

{

// Initializing the set

ConcurrentSkipListSet set =

new ConcurrentSkipListSet();

// Adding elements to this set

for (int i = 10; i <= 15; i++)

set.add(i);

// Printing the elements of the set

System.out.println("The elements in the set are:");

for (Integer i : set)

System.out.print(i + " ");

// remove() method will remove the specified

// element from the set

set.remove(1);

set.remove(5);

// Printing the elements of the set

System.out.println("nRemaining elements in set : ");

for (Integer i : set)

System.out.print(i + " ");

}

}

输出：

The elements in the set are:

10 11 12 13 14 15

Remaining elements in set :

10 11 12 13 14 15