Swapping two variable values without using any third variable.

Swapping of two values:

/**
 * @author ashok.kumar
 *
 */
public class Swapping {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		int x=2;
		int y=5;
		
		System.out.format("Value of x=%d and y=%d before swapping.\n",x,y);
		
		x=x+y;  // x=7
		y=x-y;  // y=2
		x=x-y;  // x=5
		
		System.out.format("Value of x=%d and y=%d after swapping.",x,y);
	}
}

Related Links:
Basic Java – 1 || Understand Java before start learning JAVA.
Basic Java – 2 || Variables and Data Types used in JAVA.
Basic Java – 3 || Understanding Class, Objects, Methods in Java.
Basic Java – 4 || More on methods(Return Type and Parameters)
Basic Java – 5 || Methods- Call by Value and Call by Reference in Java.
Basic Java – 6 || Understanding of Constructor and Destructor in JAVA.
Basic Java – 7 || Static Variables and Methods.
Basic Java – 8 || Lets learn about Arrays in Java.
Basic Java – 9 || Performing multiple operations using Java Operators.
Basic Java – 10 || Conditions (If and Switch) in JAVA.
Basic Java – 11 || for and for-each in Java. (Loops Part-1)
Basic Java – 12 || Alternate looping concepts while and do-while. (Loops Part-2)
Basic Java – 13 || Decimal values v/s Octal base(8) values in JAVA.
Basic Java – 14 || Learn about String literals in Java.
Basic Java – 15 || Runtime User Input using Scanner Class (Part-1).
Basic Java – 16 || Runtime User Input using BufferedReader Class (Part-2).
Basic Java – 17 || Runtime User Input using Console Class (Part-3).
Basic Java – 18 || Difference between break and continue keywords.
Basic Java – 19 || Sending Email using Java (Part-1).
Basic Java – 20 || Sending Email with attachment using Java (Part-2).
Basic Java – 21 || Stack memory and Heap memory in Java.
Basic Java – 22 || Let’s learn more about String.
Java File Handling:
File Handling | Reading data from word document(.doc or .docx) in JAVA.
File Handling | Reading data from Excel files (.xls or .xlsx) using JAVA.
File Handling | Writing data into an Excel(.XLSX or .XLS) File.
File Handling | Implement formatting in Excel using Java.
File Handling | Copy existing data from one workbook to another workbook in Java.
File Handling | Reading data from PDF file using JAVA.
File Handling || Traverse folders and subfolders in Java.
File Handling || Reading and Writing data from a text file.
File Handling || Multiple file creation using template based input data.
Framework || Simple example of Key Driven Framework using excel sheet in Selenium(JAVA).
OOPs Concept:
Java || Abstract class with Constructor.
Java | Object Oriented Programming (OOPs) Concept
Java Question And Answer:
QnA | Difference between Integer and int keywords.
QnA | Can main method be overloaded?
QnA | How do I reverse a String/Sentence in Java?
QnA | Perform Multiplication and Division without * or / or % operators.
QnA | How do I get the default value of data type?
QnA | How to split String if it contains period symbol (.) in between?
Java Programs:
Different ways to Reverse a String in Java.
Copy formatting & style of cells from one sheet to another.
Getting IP address and Hostname using InetAddress Class.
User inputs via Command Prompt using arguments of main() method of a class.
Program for List and ArrayList in Java.
Useful methods and implementation under Scanner Class.
Swapping two variable values without using any third variable.
Difference between int x= 10 and y=010 in Java.
Parameterized Constructors v/s Setter and Getter function in JAVA.
Override a Static Method.