# Java : Math with variables

**Math on Java**

Java can perform math like 4 + 5. It can perform addition, subtraction, multiplication, and division. Java also has it’s own math symbols: +, -, *, /, == (equal to), < (less than), > (greater than), <= (less than or equal to), >= (greater than or equal to), != (not equal to).

boolean math = 3 + 5 >= 48 / 4

The boolean is false because 3 + 5 = 8. 48 / 4 = 12. 8 is not greater than or equal to 12, so it is false.

**The program**

package com.lessons;

public class Math{

//This class performs math

//adds two numbers and prints out the sum

public static int add(int x, int y) {

int answer = x + y; // The variable answer is equal to the sum of the two variables x and y

// x and y are the arguments of the method, this means that int x and int y will be used in the method

return answer; //Returns the integer answer

}

public static void main(String[] args) {

int sum = *add*( 5, 6); //

// The int variable sum is equal to 5 + 6

// In the add method, answer = variable x + variable y, so when sum gets called, x becomes 5 and y becomes 6

// All you do is call the add method and replace int x and int y in the parenthesis with numbers.

System.*out*.println( sum);

//5 + 6 = 11, so 11 will get printed on the screen

}

}

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