Java中的AbstractSequentialList的isEmpty()方法


AbstractSequentialList类的isEmpty()方法用于检查链表是否为空。如果为空,则返回TRUE,否则返回FALSE。

语法如下。

public boolean isEmpty()

要在Java中使用AbstractSequentialList类,需要导入以下包。

import java.util.AbstractSequentialList;

以下是一个在Java中实现AbstractSequentialList isEmpty()方法的示例。

示例

 在线演示

import java.util.LinkedList;
import java.util.AbstractSequentialList;
public class Demo {
   public static void main(String[] args) {
      AbstractSequentialList<Integer> absSequential = new LinkedList<>();
      absSequential.add(110);
      absSequential.add(320); absSequential.add(400); absSequential.add(550); absSequential.add(600); absSequential.add(700); absSequential.add(900);
      System.out.println("Elements in the AbstractSequentialList = "+absSequential);
      System.out.println("Is the AbstractSequentialList empty? "+ absSequential.isEmpty());
   }
}

输出

Elements in the AbstractSequentialList = [110, 320, 400, 550, 600, 700, 900]
Is the AbstractSequentialList empty? False

示例

 在线演示

import java.util.LinkedList;
import java.util.AbstractSequentialList;
public class Demo {
   public static void main(String[] args) {
      AbstractSequentialList<Integer> absSequential = new LinkedList<>();
      System.out.println("Elements in the AbstractSequentialList = "+absSequential);
      System.out.println("Is the AbstractSequentialList empty? "+ absSequential.isEmpty());
   }
}

输出

Elements in the AbstractSequentialList = []
Is the AbstractSequentialList empty? True

更新日期:2019年7月30日

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