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Java Collections - Collections.emptyListIterator() Examples

Java Collections Java Java API

Class:

java.util.Collections

Method:

public static <T> ListIterator<T> emptyListIterator()

Returns a list iterator that has no elements.

Examples

package com.logicbig.example.collections;

import java.util.Collections;
import java.util.ListIterator;

public class EmptyListIteratorExample {

    public static void main(String... args) {
        ListIterator<String> itr = Collections.emptyListIterator();
        System.out.println(itr);
    }
}

Output

java.util.Collections$EmptyListIterator@79ed0012

package com.logicbig.example.collections;

import java.util.Collections;
import java.util.ListIterator;

public class EmptyListIteratorExample2 {

    public static void main(String... args) {
        ListIterator<String> itr = Collections.emptyListIterator();
        itr.add("1");
        System.out.println(itr);
    }
}

Output

Caused by: java.lang.UnsupportedOperationException
	at java.base/java.util.Collections$EmptyListIterator.add(Collections.java:4241)
	at com.logicbig.example.collections.EmptyListIteratorExample2.main(EmptyListIteratorExample2.java:15)
	... 6 more

See Also