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Java Collections - Collections.emptyList() Examples

[Last Updated: Dec 11, 2025]

Java Collections Java Java API 

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Class:

java.util.Collections

java.lang.Objectjava.lang.Objectjava.util.Collectionsjava.util.CollectionsLogicBig

Method:

public static final <T> List<T> emptyList()

Returns an empty list (immutable).


Examples


package com.logicbig.example.collections;

import java.util.Collections;
import java.util.List;

public class EmptyListExample {

    public static void main(String... args) {
        List<String> list = Collections.emptyList();
        System.out.println(list);
    }
}

Output

[]
JDK 25




package com.logicbig.example.collections;

import java.util.Collections;
import java.util.List;

public class EmptyListExample2 {

    public static void main(String... args) {
        List<String> list = Collections.emptyList();
        list.add("a");
    }
}

Output

java.lang.UnsupportedOperationException
    at java.util.AbstractList.add (AbstractList.java:155)
    at java.util.AbstractList.add (AbstractList.java:113)
    at com.logicbig.example.collections.EmptyListExample2.main (EmptyListExample2.java:15)
    at jdk.internal.reflect.DirectMethodHandleAccessor.invoke (DirectMethodHandleAccessor.java:104)
    at java.lang.reflect.Method.invoke (Method.java:565)
    at org.codehaus.mojo.exec.AbstractExecJavaBase.executeMainMethod (AbstractExecJavaBase.java:402)
    at org.codehaus.mojo.exec.ExecJavaMojo.executeMainMethod (ExecJavaMojo.java:142)
    at org.codehaus.mojo.exec.AbstractExecJavaBase.doExecClassLoader (AbstractExecJavaBase.java:377)
    at org.codehaus.mojo.exec.AbstractExecJavaBase.lambda$execute$0 (AbstractExecJavaBase.java:287)
    at java.lang.Thread.run (Thread.java:1474)
JDK 25

See Also