Java中AbstractSequentialList的isEmpty()方法
在isEmpty()该AbstractSequentialList类的方法来检查列表是否为空。如果为空，则返回TRUE，否则返回FALSE。
语法如下。
public boolean isEmpty()
要使用Java中的AbstractSequentialList类，您需要导入以下软件包。
import java.util.AbstractSequentialList;
以下是isEmpty()在Java中实现AbstractSequentialList方法的示例。
示例
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());
}
}输出结果
Elements in the AbstractSequentialList = [110, 320, 400, 550, 600, 700, 900] Is the AbstractSequentialList empty? False
示例
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());
}
}输出结果
Elements in the AbstractSequentialList = [] Is the AbstractSequentialList empty? True