Conditional Statements

  import java.util.Scanner;
  class demo
  {
    public static void main(String args[])
    {
      Scanner stdin=new Scanner(System.in);
      System.out.println("Enter a single digit number :");
      int a=stdin.nextInt();
      switch(a)
      {
        case 0: System.out.println("Zero");break;
        case 1: System.out.println("One");break;
        case 2: System.out.println("Two");break;
        case 3: System.out.println("Three");break;
        case 4: System.out.println("Four");break;
        case 5: System.out.println("Five");break;
        case 6: System.out.println("Six");break;
        case 7: System.out.println("Seven");break;
        case 8: System.out.println("Eight");break;
        case 9: System.out.println("Nine");break;
        default:System.out.println("Invalid input");
      }  
    }
  }      
  

  import java.util.Scanner;
  class demo
  {
    public static void main(String args[])
    {
      Scanner stdin=new Scanner(System.in);
      System.out.println("Enter Month in digit:");
      int a=stdin.nextInt();
      switch(a)
      {
        case 1: System.out.println("Jan");break;
        case 2: System.out.println("Feb");break;
        case 3: System.out.println("Mar");break;
        case 4: System.out.println("Apr");break;
        case 5: System.out.println("May");break;
        case 6: System.out.println("Jun");break;
        case 7: System.out.println("Jul");break;
        case 8: System.out.println("Aug");break;
        case 9: System.out.println("Sep");break;
        case 10: System.out.println("Oct");break;
        case 11: System.out.println("Nov");break;
        case 12: System.out.println("Dec");break;
        default:System.out.println("Invalid input");
      }
    }
  }      
  

  import java.util.Scanner;
  class demo
  {
    public static void main(String args[])
    {
      Scanner stdin=new Scanner(System.in);
      System.out.println("Enter color code: ");
      String a = stdin.next();
      switch( a )
      {
        case "R":
        case "r":System.out.println("Red");break;
        case "G":
        case "g":System.out.println("Green");break;
        case "B":
        case "b":System.out.println("Blue");break;
        default : System.out.println("White");
      }
    }
  }      
  

  import java.util.Scanner;
  class demo
  {
    public static void main(String args[])
    {
      Scanner stdin=new Scanner(System.in);
      System.out.println("Enter simple exp:");
      float a=stdin.nextFloat();
      String op=stdin.next();
      float b=stdin.nextFloat();
      switch(op)
      {
        case "+": System.out.println("="+(a+b));break;
        case "-": System.out.println("="+(a-b));break;
        case "x": System.out.println("="+(a*b));break;
        case "/": System.out.println("="+(a/b));break;
        default: System.out.println("Invalid operator");
      }
    }
  }      
  

  import java.util.Scanner;
  class demo
  {
    public static void main(String args[])
    {
      Scanner stdin=new Scanner(System.in);
      System.out.println("Enter temp in range 0-99:");
      int a=stdin.nextInt();
      switch(a/20)
      {
        case 0: System.out.println("cold");break;
        case 1: System.out.println("normal");break;
        case 2: System.out.println("warm");break;
        case 3: System.out.println("hot");break;
        case 4: System.out.println("very hot");break;
        default : System.out.println("invalid input");
      } 
    }
  }