JSP, Tomcat, JDBC, Projects, Example, Program » Math

Java – Math sqrt() Example, Math sqrt() Function

admin — Sun, 15 Nov 2009 12:31:10 +0000

Math class is part of java.lang package. Math sqrt method returns the square root value of the argument. If argument value is less than zero, it will return NaN value. sqrt function return type is double or float.

Math sqrt example explains how to use Math sqrt function in java.

public class JavaMathSqrtExample {

    public static void main(String[] args) {

        double E1 = Math.sqrt(16);

        double E2 = Math.sqrt(144.6793);

        double E3 = Math.sqrt(-2323.8393);

        System.out.println("Math Square root value :"+E1);
        System.out.println("Math Square root value :"+E2);
        System.out.println("Math Square root value :"+E3);
    }
}

Output

Math Square root value :4.0
Math Square root value :12.02827086492485
Math Square root value :NaN

Java – Math signum() Example, Math signum() Function

admin — Sun, 15 Nov 2009 12:19:31 +0000

Math class is part of java.lang package. Math signum method returns the argument either 1.0 or -1.0. If argument value is less than zero, it will return -1.0 value and argument is greater than zero or zero, it will return 1.0. signum function return type is double or float.

Math signum example explains how to use Math signum function in java.

public class JavaMathSignumExample {

    public static void main(String[] args) {

        double E1 = Math.signum(2323.4393086905318781);

        double E2 = Math.signum(0);

        double E3 = Math.signum(-2323.8393086905318781);

        System.out.println("Math signum value :"+E1);
        System.out.println("Math signum value :"+E2);
        System.out.println("Math signum value :"+E3);
    }
}

Output

Math signum value :1.0
Math signum value :0.0
Math signum value :-1.0

Java – Math round() Example, Math round() Function, Remove decimal

admin — Sun, 15 Nov 2009 11:57:42 +0000

Math class is part of java.lang package. Math round method returns the argument closest to integer value of the number. If fraction value is more than point 5, it will add 1 to original value nearest to positive value. round function return type is double or float. round function remove decimal number from value and return only number without decimal.

Math round example explains how to use Math round function in java.

public class JavaMathRoundExample {

    public static void main(String[] args) {

        double E1 = Math.round(2323.4393086905318781);

        double E2 = Math.round(2323.8393086905318781);

        double E3 = Math.round(-2323.8393086905318781);

        float F1 = Math.round(2323.43930);

        float F2 = Math.round(2323.8393);

        float F3 = Math.round(-2323.8393);

        System.out.println("Math round value :"+E1);
        System.out.println("Math round value :"+E2);
        System.out.println("Math round value :"+E3);

        System.out.println("Math round value :"+F1);
        System.out.println("Math round value :"+F2);
        System.out.println("Math round value :"+F3);
    }
}

Output

Math round value :2323.0
Math round value :2324.0
Math round value :-2324.0
Math round value :2323.0
Math round value :2324.0
Math round value :-2324.0

Java – Math rint() Example, Math rint() Program

admin — Sun, 15 Nov 2009 06:58:16 +0000

Math class is part of java.lang package. Math rint method returns the argument that is close to integer number in fraction. rint function return type is double.

Math rint example explains how to use Math rint function in java.

public class JavaMathRintExample {

    public static void main(String[] args) {

        double E1 = Math.rint(2323.4393086905318781);

        double E2 = Math.rint(2323.8393086905318781);

        System.out.println("Math rint value :"+E1);
        System.out.println("Math rint value :"+E2);
    }
}

Output

Math rint value :2323.0
Math rint value :2324.0

Java – Math random() Example, Math random() Program, Generate random number

admin — Sun, 15 Nov 2009 06:45:50 +0000

Math class is part of java.lang package. Math random method returns random number in fraction of double among 0.0 to 1.0. random function return type is double. With random function we can generate random number easily. Generating integer and long random number example is shown to create random number.

Math random example explains how to use Math random function in java.

public class JavaMathRandomExample {

    public static void main(String[] args) {

        double E1 = Math.random(); 

        long E2 = Math.round(Math.random()*10); // 1 digit random

        long E3 = Math.round(Math.random()*100); //2 digit random

        long E4 = Math.round(Math.random()*1000); //3 digit random

        System.out.println("Math random value :"+E1);
        System.out.println("Math random value :"+E2);
        System.out.println("Math random value :"+E3);
        System.out.println("Math random value :"+E4);
    }
}

Output

Math random value :0.8393086905318781
Math random value :3
Math random value :82
Math random value :719

Java – Math pow() Example, Math pow() Program

admin — Sun, 15 Nov 2009 06:13:17 +0000

Math class is part of java.lang package. Math pow method returns value of first argument of power of second numbers e.g 2³. pow function return type is double.

Math pow example explains how to use Math pow function in java.

public class JavaMathPowExample {

    public static void main(String[] args) {

        double E1 = Math.pow(2, 3); // 2x2x2=8

        double E2 = Math.pow(2.23, 3.45);

        System.out.println("Math pow value :"+E1);
        System.out.println("Math pow value :"+E2);
    }
}

Output

Math pow value :8.0
Math pow value :15.909325868265608

Java – Math min() Example, Math min() Program

admin — Sun, 15 Nov 2009 05:58:53 +0000

Math class is part of java.lang package. Math min method returns the smallest lowest value of two numbers. If value is negative, it will return lowest value nearest to positive value. min function return type is double. min method find lowest smallest value between 2 number and compare two value to get smallest number.

Math min example explains how to use Math min function in java.

public class JavaMathMinExample {

    public static void main(String[] args) {

        double E1 = Math.min(34.45, 23.67);

        double E2 = Math.min(14.45, 23.67);

        double E3 = Math.min(-14.45, -23.67);

        System.out.println("Math min value :"+E1);
        System.out.println("Math min value :"+E2);
        System.out.println("Math min value :"+E3);
    }
}

Output

Math min value :23.67
Math min value :14.45
Math min value :-23.67

Java – Math max() Example, Math max() Program

admin — Sun, 08 Nov 2009 09:10:50 +0000

Math class is part of java.lang package. Math max method returns the bigger highest value of two double numbers with fraction. If value is negative, it will return highest value nearest to positive value. max function return type is double. Max method find highest bigger value between 2 number and compare two value to get bigger number.

Math max example explains how to use Math max function in java.

public class JavaMathMaxExample {

    public static void main(String[] args) {

        double E1 = Math.max(34.45, 23.67);

        double E2 = Math.max(14.45, 23.67);

        double E3 = Math.max(-14.45, -23.67);

        System.out.println("Math max value :"+E1);
        System.out.println("Math max value :"+E2);
        System.out.println("Math max value :"+E3);
    }
}

Output

Math max value :34.45
Math max value :23.67
Math max value :-14.45

Java – Math floor() Example, Math floor Program

admin — Sun, 08 Nov 2009 08:56:15 +0000

Math class is part of java.lang package. Math floor method returns the lower nearest value of double number in fraction. If value is negative, it will return nearest to lowest value. floor function return type is double.

Math floor example explains how to use Math floor function in java.

public class JavaMathFloorExample {

    public static void main(String[] args) {

        double E1 = Math.floor(14.2345);

        double E2 = Math.floor(14.5345);

        double E3 = Math.floor(-14.2345);

        double E4 = Math.floor(-14.5345);

        System.out.println("Math floor value :"+E1);
        System.out.println("Math floor value :"+E2);
        System.out.println("Math floor value :"+E3);
        System.out.println("Math floor value :"+E4);
    }
}

Output

Math floor value :14.0
Math floor value :14.0
Math floor value :-15.0
Math floor value :-15.0

Java – Math ceil Example, Math ceil Program

admin — Sun, 08 Nov 2009 08:20:54 +0000

Math class is part of java.lang package. Math ceil method returns the upper nearest value of double number in fraction. If value is negative, it will return nearest to highest value. ceil function return type is double.

Math ceil example explains how to use Math ceil function in java.

public class JavaMathCeilExample {

    public static void main(String[] args) {

        double E1 = Math.ceil(15.156);

        double E2 = Math.ceil(-15.156);

        double E3 = Math.ceil(15);

        System.out.println("Math ceil value :"+E1);
        System.out.println("Math ceil value :"+E2);
        System.out.println("Math ceil value :"+E3);
    }
}

Output

Math ceil value :16.0
Math ceil value :-15.0
Math ceil value :15.0

JSP, Tomcat, JDBC, Projects, Example, Program » Math

Java – Math sqrt() Example, Math sqrt() Function

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