Java Random Pro

Find square root of a number using Math

public class FindSquareRootExample

{

public static void main(String[] args)

{

System.out.println(Math.sqrt(9));

System.out.println(Math.sqrt(25.5));

   }

}

Generate Random Int Within Given Range

public class GenerateRandomIntByRange

 {

public static void main(String args[])

 {

int random = (int)(Math.random()* 10 ) + 5;

System.out.println(random);

   }

}

Generate random numbers using Math

public class GenerateRandomNumbers

{

public static void main(String[] args)

{

System.out.println("Random numbers between 0.0 and 1.0 are,");

for(int i=0; i < 5 ; i++)

System.out.println("Random Number ["+ (i+1) + "] : " + Math.random());

System.out.println("Random numbers between 1 and 100 are,");

for(int i=0; i < 5 ; i++)

System.out.println("Random Number ["+ (i+1) + "] : " + (int)(Math.random()*100));

     }

}

Round Java float and double numbers using Math

public class RounFloatDoubleNumbersExample

 {

public static void main(String[] args)

{

System.out.println(Math.round(10f));

System.out.println(Math.round(20.5f));

 

System.out.println(Math.round(20.5f));

System.out.println(Math.round(-19.4f));

System.out.println(Math.round(-23.5f));

  }

}

Convert Java String to Short

public class StringToShortExample

{

public static void main(String[] args)

{

Short sObj1 = new Short("100");

System.out.println(sObj1);

String str = "100";

Short sObj2 = Short.valueOf(str);

System.out.println(sObj2);

   }

}

Convert Short object to String object

public class ShortToStringExample

{

public static void main(String[] args)

{

short s = 10;

Short sObj = new Short(s);

String str = sObj.toString();

System.out.println("Short converted to String as " + str);

    }

}