Java Simple Calculator

Example Application: calculator

• Java Simple Calculator
  • Sum
  • Subtraction
  • Multiplication
  • Division
  • PI
  • Exponent
  • Random
  • Square Root
• Some links for more in depth learning
  • Operators

Sum

x + y

Example

System.out.println(String.format("%.2f + %.2f = %.2f", x, y, x + y));

Subtraction

x - y

Example

System.out.println(String.format("%.2f - %.2f = %.2f", x, y, x - y));

Multiplication

x * y

Example

System.out.println(String.format("%.2f * %.2f = %.2f", x, y, x * y));

Division

x / y

Example

System.out.println(String.format("%.2f / %.2f = %.2f", x, y, x / y));

GET PI

Import:

import java.lang.Math;

Code:

Math.PI

Example

System.out.println("PI: " + Math.PI);

Exponent

Import:

import java.lang.Math;

Code:

Math.pow(x, y)

Example

	System.out.println(String.format("%.2f ^ %.2f = %.2f", x, y, Math.pow(x, y)));

Random

Import:

import java.lang.Math;

Generate random integers in a range.

new Random().nextInt(x) 

Example

Random integer in a range between min: 0 (inclusive) and max: X (inclusive).

System.out.println("Random Number: "+ new Random().nextInt(10));

Square Root of x

Import:

import java.lang.Math;

Code:

Math.sqrt(x)

Example

System.out.println(String.format("Square Root of %.2f = %.2f", x, Math.sqrt(x)));

Some links for more in depth learning

• Java OPERATORS;
• JAVA PRINT;
• JAVA SWITCH CASE;
• JAVA IF/ELSE;