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The Bitwise operators are used to perform manipulation of individual bits of a number which is an essential aspect of any programming language as ultimately everything comes down to 0 and 1. The following pointers will be covered in this Bitwise Operators in Java article:
Often times, programmers find the need to manipulate numbers. Individual bits of numbers can be modified or manipulated by using the bitwise operators provided by java. These operators can be used with char, short, int or any of the integral types. They cannot be applied to double and float.
Moving on with this article on Bitwise Operators in Java.
The Binary & operators are very much similar to the logical && operators, the only difference being they work with two bits instead of two expressions. The Binary AND operator returns the value 1 is both the operands are equal to one, else they return 0.
The Binary OR operator is similar to the logical || operator. It works on two bits instead of two expressions and returns 1 if either one of its operands evaluates as 1. The result is 1 even if both the operands evaluate to 1.
XOR stand for “exclusive OR”. This operator returns 1, if exactly one of its operands evaluate to 1. The result is 0, if both the operands evaluate to 1 or 0.
The one’s complement of the input value is returned by this operator. In simpler terms, it inverses the bits i.e. it converts the 0’s to 1’s and vice versa.
Moving on with this article on Bitwise Operators in Java.
public class bitwiseExample { public static void main(String[] args) { //Variables Definition and Initialization int n1 = 18, n2 = 28, n3 =0; //Bitwise AND System.out.println("num1 & num2 = " + (n1 & n2)); //Bitwise OR System.out.println("num1 | num2 = " + (n1 | n2) ); //Bitwise XOR System.out.println("num1 ^ num2 = " + (n1 ^ n2) ); //Binary Complement Operator System.out.println("~num1 = " + ~n1 ); } }
Output:
num1 & num2 = 16
num1 | num2 = 30
num1 ^ num2 = 14
Moving on with this article on Bitwise Operators in Java.
These operators shift the numbers either to the left or right, multiplying and dividing the numbers respectively.
This operator shifts the number to the right. It fills 0 in the empty spaces that are left as a result. The leftmost bit is dependent upon the sign of the initial number. Similar to dividing a number with some power of two.
This operator shifts the number to the right. It fills 0 in the empty spaces that are left as a result. The leftmost bit is set to 0.
This operator shifts the number to the left. It fills 0 in the empty spaces that are left as a result. Similar to multiplying a number with some power of two.
Java does not provide any such operator, unlike the unsigned right shift.
Moving on with this article on Bitwise Operators in Java.
Example of Shift Operator
public class bitwiseExample { public static void main(String[] args) { int n1 = 8; int n2 = -10; // left shift operator System.out.println("n1<<2 = " + (n1 << 2)); // right shift operator System.out.println("n2>>2 = " + (n2 >> 2)); // unsigned right shift operator System.out.println("n2>>>2 = " + (n2 >>> 2)); } }
Output:
n1<<2 = 32
n2>>2 = -3
n2>>>2 = 1073741821
With this, we come to an end of this Bitwise Operators in Java article. The operators discussed in the article allow the user to manipulate the numbers or individual bits of data effectively. Check out the Java training by Edureka, a trusted online learning company with a network of more than 250,000 satisfied learners spread across the globe. Edureka’s Java J2EE and SOA training and certification course is designed for students and professionals who want to be a Java Developer. The course is designed to give you a head start into Java programming and train you for both core and advanced Java concepts along with various Java frameworks like Hibernate & Spring.
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