Java Methods for Outputting Numbers with Examples

Java Output Numbers and give examples

In Java, you can output numbers using various methods, primarily through the System.out class. The most common methods for outputting numbers are System.out.print(), System.out.println(), and System.out.printf(). Below are examples of each method:

1. Using System.out.print()

This method prints the output without adding a new line at the end.

public class PrintExample {
    public static void main(String[] args) {
        int number = 10;
        double decimalNumber = 5.75;

        System.out.print("The integer is: " + number);
        System.out.print(" and the decimal is: " + decimalNumber);
    }
}

Output:

The integer is: 10 and the decimal is: 5.75

2. Using System.out.println()

This method prints the output and adds a new line at the end.

public class PrintExample {
    public static void main(String[] args) {
        int number = 10;
        double decimalNumber = 5.75;

        System.out.println("The integer is: " + number);
        System.out.println("The decimal is: " + decimalNumber);
    }
}

Output:

The integer is: 10
The decimal is: 5.75

3. Using System.out.printf()

This method allows for formatted output, similar to the printf function in C. You can specify the format of the output.

public class PrintExample {
    public static void main(String[] args) {
        int number = 10;
        double decimalNumber = 5.75;

        System.out.printf("The integer is: %d%n", number);
        System.out.printf("The decimal is: %.2f%n", decimalNumber);
    }
}

Output:

The integer is: 10
The decimal is: 5.75

Explanation of printf Format Specifiers:

• %d is used for integers.
• %.2f is used for floating-point numbers, where .2 specifies that two digits should be displayed after the decimal point.
• %n is used to insert a new line, which is platform-independent.

Summary

• Use System.out.print() for continuous output on the same line.
• Use System.out.println() for output followed by a new line.
• Use System.out.printf() for formatted output, allowing for more control over how numbers are displayed.