Java - Long rotateLeft() method

Description

The Java Long rotateLeft() method returns the value obtained by rotating the two's complement binary representation of the specified long value i left by the specified number of bits. (Bits shifted out of the left hand, or high-order, side reenter on the right, or low-order.).

Declaration

Following is the declaration for java.lang.Long.rotateLeft() method

public static long rotateLeft(long i, long distance)

Parameters

i − This is the long value.
distance − This is the rotation distance.

Return Value

This method returns the value obtained by rotating the two's complement binary representation of the specified long value left by the specified number of bits.

Exception

Example 1

The following example shows the usage of Long rotateLeft() method to get an long by rotating the two's complement binary representation of the specified long value i left by the specified number of bits. We've created a long variable and assigned it a positive long value. Then using rotateLeft() method within a for loop, we're printing new integers generated.

package com.tutorialspoint;
public class LongDemo {
   public static void main(String[] args) {
      long n = 2L;

      // returns the value obtained by rotating left
      for(long i = 0; i < 4; i++) {
         n = Long.rotateLeft(n, 4);
         System.out.println(n);
      }
   }
}

Output

Let us compile and run the above program, this will produce the following result −

Example 2

The following example shows the usage of Long rotateLeft() method to get an long by rotating the two's complement binary representation of the specified long value i left by the specified number of bits. We've created a long variable and assigned it a negative long value. Then using rotateLeft() method within a for loop, we're printing new integers generated.

package com.tutorialspoint;
public class LongDemo {
   public static void main(String[] args) {
      long n = -2L;

      // returns the value obtained by rotating left
      for(long i = 0; i < 4; i++) {
         n = Long.rotateLeft(n, 4);
         System.out.println(n);
      }
   }
}

Output

Let us compile and run the above program, this will produce the following result −

Example 3

The following example shows the usage of Long rotateLeft() method to get an long by rotating the two's complement binary representation of the specified long value i left by the specified number of bits. We've created a long variable and assigned it a zero value. Then using rotateLeft() method within a for loop, we're printing new integers generated.

package com.tutorialspoint;
public class LongDemo {
   public static void main(String[] args) {
      long n = 0L;

      // returns the value obtained by rotating left
      for(long i = 0; i < 4; i++) {
         n = Long.rotateLeft(n, 4);
         System.out.println(n);
      }
   }
}

Output

Let us compile and run the above program, this will produce the following result −

java_lang_long.htm