Java - Boolean Class getBoolean() Method

Boolean class getBoolean() method: Here, we are going to learn about the getBoolean() method of Boolean class with its syntax and example. By Preeti Jain Last updated : March 17, 2024

Boolean class getBoolean() method

getBoolean() method is available in java.lang package.
getBoolean() method is used to return the system property in boolean values either true or false.
getBoolean() method is a static method, it is accessible with the class name too and if we try to access the method with the class object then also we will not get an error.
getBoolean() method does not throw an exception at the time of returning system property.

Syntax

public static boolean getBoolean(String sys_prop);

Parameters

String sys_prop – represents the string value (system _property) to be parsed.

Return Value

The return type of this method is boolean - it returns the corresponding boolean value that represent the String value.

Note: If the given argument system_property exists and the value is equal to true, it returns true.

Example

// Java program to demonstrate the example 
// of getBoolean(String sys_prop) method of Boolean class

public class GetBooleanOfBooleanClass {
    public static void main(String[] args) {
        String sys_prop1 = "Is Java8 exists";
        String sys_prop2 = "Is C++ not support OOPS";

        // By setting property value by using 
        // setProperty(propertyname , value) method
        System.setProperty(sys_prop1, "true");
        System.setProperty(sys_prop2, "false");

        // Store result in boolean variables
        boolean b1 = Boolean.getBoolean(sys_prop1);
        boolean b2 = Boolean.getBoolean(sys_prop2);

        // Display result
        System.out.println("Boolean.getBoolean(sys_prop1): " + b1);
        System.out.println("Boolean.getBoolean(sys_prop2): " + b2);
    }
}

Output

Boolean.getBoolean(sys_prop1): true
Boolean.getBoolean(sys_prop2): false

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