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OBJECT ORIENTED PROGRAMMIING LANGUAGE PROGRAMS

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Rohit Kumar
Rohit Kumar

The document contains code snippets demonstrating basic Java programming concepts like printing "Hello World", adding two integers, using arithmetic operators, finding the ASCII value of a character, swapping two numbers, and reversing an integer. Each code sample shows how to implement the concept by declaring variables, using the relevant operators or methods, and printing output to demonstrate the result.

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HELLO WORLD class HelloWorld { // Your program begins with a call to main(). // Prints "Hello, World" to the terminal window. public static void main(String args[]) { System.out.println("Hello, World"); } } ADDING OF TWO INTEGERS import.java.io.*; class Main { public static void main(String[] args) { int first = 10; int second = 20; // add two numbers int sum = first + second; System.out.println(first + " + " + second + " = " + sum); } }
operators: class Main { public static void main(String[] args) { // declare variables int a = 12, b = 5; // addition operator System.out.println("a + b = " + (a + b)); // subtraction operator System.out.println("a - b = " + (a - b)); // multiplication operator System.out.println("a * b = " + (a * b)); } } ASCII VALUE OF THE CHARACTER public class AsciiValue { public static void main(String[] args) { char ch = 'a'; int ascii = ch; // You can also cast char to int int castAscii = (int) ch; System.out.println("The ASCII value of " + ch + " is: " + ascii); System.out.println("The ASCII value of " + ch + " is: +castAscii); } }
SWAPPING OF TWO NUMBERS public class SwapNumbers { public static void main(String[] args) { float first = 1.20f, second = 2.45f; System.out.println("--Before swap--"); System.out.println("First number = " + first); System.out.println("Second number = " + second); // Value of first is assigned to temporary float temporary = first; // Value of second is assigned to first first = second; // Value of temporary (which contains the initial value of first) is assigned to second second = temporary; System.out.println("--After swap--"); System.out.println("First number = " + first); System.out.println("Second number = " + second); }
Class reverse { Public static int reverse( int num) { Int reverse=0; While(num!=0) { Reverse=reverse*10+num%10; Num/=10; } Return reverse; } }

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OBJECT ORIENTED PROGRAMMIING LANGUAGE PROGRAMS

  • 1. HELLO WORLD class HelloWorld { // Your program begins with a call to main(). // Prints "Hello, World" to the terminal window. public static void main(String args[]) { System.out.println("Hello, World"); } } ADDING OF TWO INTEGERS import.java.io.*; class Main { public static void main(String[] args) { int first = 10; int second = 20; // add two numbers int sum = first + second; System.out.println(first + " + " + second + " = " + sum); } }
  • 2. operators: class Main { public static void main(String[] args) { // declare variables int a = 12, b = 5; // addition operator System.out.println("a + b = " + (a + b)); // subtraction operator System.out.println("a - b = " + (a - b)); // multiplication operator System.out.println("a * b = " + (a * b)); } } ASCII VALUE OF THE CHARACTER public class AsciiValue { public static void main(String[] args) { char ch = 'a'; int ascii = ch; // You can also cast char to int int castAscii = (int) ch; System.out.println("The ASCII value of " + ch + " is: " + ascii); System.out.println("The ASCII value of " + ch + " is: +castAscii); } }
  • 3. SWAPPING OF TWO NUMBERS public class SwapNumbers { public static void main(String[] args) { float first = 1.20f, second = 2.45f; System.out.println("--Before swap--"); System.out.println("First number = " + first); System.out.println("Second number = " + second); // Value of first is assigned to temporary float temporary = first; // Value of second is assigned to first first = second; // Value of temporary (which contains the initial value of first) is assigned to second second = temporary; System.out.println("--After swap--"); System.out.println("First number = " + first); System.out.println("Second number = " + second); }
  • 4. Class reverse { Public static int reverse( int num) { Int reverse=0; While(num!=0) { Reverse=reverse*10+num%10; Num/=10; } Return reverse; } }