JAVA Tutorial
Java Math
Numerous methods in the Java Math class let you work with numbers to solve mathematical problems.
Math.max(x,y)
The greatest value of x and y can be found using the Math.max(x,y) method:
Example
Math.max(5, 10);
Math.min(x,y)
The lowest value of x and y can be found using the Math.min(x,y) method:
Example
Math.min(5, 10);
Math.sqrt(x)
The square root of x is returned by the Math.sqrt(x) function:
Example
Math.sqrt(64);
Math.abs(x)
The procedure Math.abs(x) yields the value of x in absolute (positive) terms:
Example
Math.abs(-4.7);
Random Numbers
A random number between 0.0 (inclusive) and 1.0 (exclusive) is returned by Math.random():
Example
Math.random();
If you want more control over the random number, you can use the following formula, for instance, if you just want a random number between 0 and 100:
Example
int randomNum = (int)(Math.random() * 101); // 0 to 100
