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Java Utils - Objects.nonNull() Examples

[Last Updated: Nov 8, 2025]

Java Utils Java Java API 

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Class:

java.util.Objects

java.lang.Objectjava.lang.Objectjava.util.Objectsjava.util.ObjectsLogicBig

Method:

public static boolean nonNull(Object obj)

Returns true if the provided reference is non-null otherwise returns false. Useful for a java.util.function.Predicate.


Examples


package com.logicbig.example.objects;

import java.util.Objects;

public class NonNullExample {

    public static void main(String... args) {
        String str = "testString";
        //equivalent to obj != null;
        boolean b = Objects.nonNull(str);
        System.out.println(b);
    }
}

Output

true




package com.logicbig.example.objects;

import java.util.Arrays;
import java.util.List;
import java.util.Objects;
import java.util.stream.Collectors;

public class NonNullExample2 {

    public static void main(String... args) {
        List<String> list = Arrays.asList("a", "b", null, null);
        List<String> list2 = list.stream()
                                   .filter(Objects::nonNull)
                                   .collect(Collectors.toList());
        System.out.println(list2);
    }
}

Output

[a, b]

See Also