JAVA Prg Practice




Program 1
//Find Maximum of 2 nos.
class Maxof2{
  public static void main(String args[]){
      //taking value as command line argument.
      //Converting String format to Integer value
      int i = Integer.parseInt(args[0]);
      int j = Integer.parseInt(args[1]);
      if(i > j)
          System.out.println(i+" is greater than "+j);
      else
          System.out.println(j+" is greater than "+i);
  }
}
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Program 2

//Find Minimum of 2 nos. using conditional operator

class Minof2{
      public static void main(String args[]){
      //taking value as command line argument.
      //Converting String format to Integer value
      int i = Integer.parseInt(args[0]);
      int j = Integer.parseInt(args[1]);
      int result = (i<j)?i:j;
      System.out.println(result+" is a minimum value");
  }
}
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Program 3
/* Write a program that will read a float type value from the   keyboard and print the following output.
   ->Small Integer not less than the number.
   ->Given Number.
   ->Largest Integer not greater than the number.
*/
class ValueFormat{
  public static void main(String args[]){
      double i = 34.32; //given number 
      System.out.println("Small Integer not greater than the number : "+Math.ceil(i));
      System.out.println("Given Number : "+i);
      System.out.println("Largest Integer not greater than the number : "+Math.floor(i));
  }
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Program 4

/*Write a program to generate 5 Random nos. between 1 to 100, and it
  should not follow with decimal point.
*/
class RandomDemo{
      public static void main(String args[]){
          for(int i=1;i<=5;i++){
              System.out.println((int)(Math.random()*100));
          }
    }
}
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Program 5
/* Write a program to display a greet message according to
   Marks obtained by student.
*/
class SwitchDemo{
      public static void main(String args[]){
          int marks = Integer.parseInt(args[0]);                //take marks as command line argument.
         switch(marks/10){
            case 10:
            case 9:
            case 8:
                     System.out.println("Excellent");
                     break;
            case 7:
                     System.out.println("Very Good");
                     break;
            case 6:
                     System.out.println("Good");
                     break;
            case 5:
                     System.out.println("Work Hard");
                     break;
            case 4:
                     System.out.println("Poor");
                     break;
            case 3:
            case 2:
            case 1:
            case 0:
                     System.out.println("Very Poor");
                     break;
            default:
                     System.out.println("Invalid value Entered");
      }
 }
}