How do I use the shift left “

The signed shift left operator << shifts a bit pattern to the left. This operator operates with two operand, the left-hand operand to be shifted and the right-hand operand tells how much position to shift.

Shifting a “0010” bit pattern using the << operator 2 position will produce a “1000” bit pattern. The signed shift left operator produce a result that equals to multiplying a number by 2, which double the value of a number.

package org.kodejava.example.fundamental;

public class SignedLeftShiftOperator {
    public static void main(String[] args) {
        //
        // The binary representation of 2 is "0010"
        //
        int number = 2;
        System.out.println("number      = " + number);
        System.out.println("binary      = " + 
                Integer.toBinaryString(number));

        //
        // Using the shift left operator we shift the bits two
        // times to the left. Which will shift the "0010" into
        // "1000"
        //
        int shiftedLeft = number << 2;
        System.out.println("shiftedLeft = " + shiftedLeft);
        System.out.println("binary      = " + 
                Integer.toBinaryString(shiftedLeft));
    }
}
Wayan Saryada

Wayan Saryada

A programmer, runner, recreational diver, currently living in the island of Bali, Indonesia. Mostly programming in Java, creating web based application with Spring Framework, JPA, etc. If you need help on Java programming you can hire me on Fiverr.
Wayan Saryada

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