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Java Reflection - Array.getBoolean() Examples

[Last Updated: Nov 8, 2025]

Java Reflection Java Java API 

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Class:

java.lang.reflect.Array

java.lang.Objectjava.lang.Objectjava.lang.reflect.Arrayjava.lang.reflect.ArrayLogicBig

Method:

public static boolean getBoolean(Object array,
                                 int index)
                          throws IllegalArgumentException,
                                 ArrayIndexOutOfBoundsException

Returns the value of the indexed component in the specified array object, as a boolean


Examples


package com.logicbig.example.array;

import java.lang.reflect.Array;

public class GetBooleanExample {

    public static void main(String... args) {
        boolean[] ar = {true, false, true, true};
        boolean b = Array.getBoolean(ar, 2);
        System.out.println(b);
    }
}

Output

true




This method does not work for Array of Boolean objects:

package com.logicbig.example.array;

import java.lang.reflect.Array;

public class GetBooleanExample2 {

    public static void main(String... args) {
        Boolean[] ar = {true, false, true, true};
        boolean b = Array.getBoolean(ar, 2);
        System.out.println(b);
    }
}

Output

java.lang.IllegalArgumentException: Argument is not an array of primitive type
    at java.lang.reflect.Array.getBoolean (Native Method)
    at com.logicbig.example.array.GetBooleanExample2.main (GetBooleanExample2.java:16)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at java.lang.Thread.run (Thread.java:834)

See Also