Java Binary Literals

by Online Tutorials Library July 14, 2022

Binary Literals

Java added a new feature Binary Literal in Java 7. I allows you to express integral types (byte, short, int, and long) in binary number system. To specify a binary literal, add the prefix 0b or 0B to the integral value.

In the following example, we are creating binary literals from integral values.

Binary Literal Example

 public class BinaryLiteralsExample { public static void main(String[] args) { // Binary literal in byte type byte b1 = 0b101;// Using b0, The b can be lower or upper case byte b2 = 0B101;// Using B0 System.out.println(“———-Binary Literal in Byte—————-“); System.out.println(“b1 = “+b1); System.out.println(“b2 = “+b2);  // Binary literal in short type short s1 = 0b101;// Using b0, The b can be lower or upper case short s2 = 0B101;// Using B0 System.out.println(“———-Binary Literal in Short—————-“); System.out.println(“s1 = “+s1); System.out.println(“s2 = “+s2);  // Binary literal in int type int i1 = 0b101;// Using b0, The b can be lower or upper case int i2 = 0B101;// Using B0 System.out.println(“———-Binary Literal in Integer—————-“); System.out.println(“i1 = “+i1); System.out.println(“i2 = “+i2);  // Binary literal in long type long l1 = 0b0000011111100001;// Using b0, The b can be lower or upper case long l2 = 0B0000011111100001;// Using B0 System.out.println(“———-Binary Literal in Long—————-“); System.out.println(“l1 = “+l1); System.out.println(“l2 = “+l2); } } 

Output:

----------Binary Literal in Byte---------------- b1 = 5 b2 = 5 ----------Binary Literal in Short---------------- s1 = 5 s2 = 5 ----------Binary Literal in Integer---------------- i1 = 5 i2 = 5 ----------Binary Literal in Long---------------- l1 = 2017 l2 = 2017

Binary Literal Example 2

In this example, we are creating negative binary, using underscore in binary literals and manipulating as well.

 public class BinaryLiteralsExample { public static void main(String[] args) { byte b1 = 5; // a decimal value // Using binary of 5 byte b2 = 0b101;// using b0, The b can be lower or upper case // Declaring negative binary byte b3 = -0b101; // Using underscore in binary literal byte b4 = 0b101_0; System.out.println(“b1 = “+b1); System.out.println(“b2 = “+b2); System.out.println(“b3 = “+b3); System.out.println(“b4 = “+b4); // Check whether binary and decimal are equal  System.out.println(“is b1 and b2 equal: “+(b1==b2)); // Perform operation on binary value System.out.println(“b2 + 1 = “+(b2+1)); // Perform operation on negative binary value System.out.println(“b3 + 1 = “+(b3+1)); System.out.println(“b4 x 2 = “+(b4*2)); } } 

Output:

b1 = 5 b2 = 5 b3 = -5 b4 = 10 is b1 and b2 equal: true b2 + 1 = 6 b3 + 1 = -4 b4 x 2 = 20

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