Print Boolean Value Using the printf() Method in Java

1. Print Boolean By Using the printf() Method in Java
2. Print Boolean By Using the println() Method in Java
3. Print Boolean By Using the print() Method in Java

This tutorial introduces the printf() method to print a boolean value in Java.

Boolean is a data type in Java that holds either true or false literals. It is mostly used with conditional statements. This article will teach us to print any boolean value using the printf() method.

In Java, to print any value, we use the System.out.println() method that works for boolean value as well, but if we want to print any formatted output to the console, then we use the printf() method. This method is similar to the printf() function of the C language.

In Java, this method belongs to the PrintStream class and can print formatted output to the console. The syntax of this method is below.

public PrintStream printf(String format, Object... args)

This method takes two arguments. The first is a formatted string, and the second is an object to print.

The format string can be any of the following:

Let’s understand the printing of boolean values with some examples.

Print Boolean By Using the printf() Method in Java

In this example, we used the printf() method of the PrintStream class to print boolean or formatted output to the console. This method is similar to the println() method, except it takes two arguments.

See the example below.

public class SimpleTesting{
    public static void main(String args[]) {
        boolean isGreen = true;
        findColor(isGreen);
        isGreen = false;
        findColor(isGreen);    
    }
    static void findColor(boolean isGreen) {
        if(isGreen) {
            System.out.printf("Apple is green: %b%n",isGreen);
        }else {
            System.out.printf("Apple is green: %b%n",isGreen);
        }
    }
}

Output:

Apple is green: true
Apple is green: false

Print Boolean By Using the println() Method in Java

If you don’t want formatted output or the printf() method, you can use the most used method of Java, the println(). This method does not require a format specifier, and you can get the result easily to the console.

See the example below.

public class SimpleTesting{
    public static void main(String args[]) {
        boolean isGreen = true;
        findColor(isGreen);
        isGreen = false;
        findColor(isGreen);    
    }
    static void findColor(boolean isGreen) {
        if(isGreen) {
            System.out.println("Apple is green: "+isGreen);
        }else {
            System.out.println("Apple is green: "+isGreen);
        }
    }
}

Output:

Apple is green: true
Apple is green: false

Print Boolean By Using the print() Method in Java

You can even use the print() method without any format specifier string and get the desired result to the console. This method is similar to the println() method except for printing the result in the same line.

See the example below.

public class SimpleTesting{
    public static void main(String args[]) {
        boolean isGreen = true;
        findColor(isGreen);
        isGreen = false;
        findColor(isGreen);    
    }
    static void findColor(boolean isGreen) {
        if(isGreen) {
            System.out.print("Apple is green: "+isGreen);
        }else {
            System.out.print("\nApple is green: "+isGreen);
        }
    }
}

Output:

Apple is green: true
Apple is green: false