Java Math

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The Java Math class has many methods that allows you to perform mathematical tasks on numbers.

Math.max(x,y)

The Math.max(x,y) method can be used to find the highest value of x and y:

Example

				
					Math.max(5, 10);


				
			

Math.min(x,y)

The Math.min(x,y) method can be used to find the lowest value of x and y:

Example

				
					Math.min(5, 10);


				
			

Math.sqrt(x)

The Math.sqrt(x) method returns the square root of x:Example

				
					Math.min(5, 10);


				
			

Math.abs(x)

The Math.abs(x) method returns the absolute (positive) value of x::Example

				
					Math.abs(-4.7);
				
			

Random Numbers

Math.random() returns a random number between 0.0 (inclusive), and 1.0 (exclusive):Example

				
					Math.random();
				
			

To get more control over the random number, e.g. you only want a random number between 0 and 100, you can use the following formula:Example

				
					int randomNum = (int)(Math.random() * 101);  // 0 to 100
				
			

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