# Java Program to find the Square Root of a Number2 min read

This post shows how to find a square root of a number in java. We will learn two methods to find the square root one by an in-built math method called Math.sqrt() and the other by using do-while loop.
let’s begin.

## 1. Program to find square root using Math.sqrt() in java

This is a simple and easy method we only need to use Math.sqrt() which returns the square root value when an argument of double is passed to it. For positive or negative zero arguments, it returns the same value as that of the argument.

#### Program:

The output for the square root using Math.Sqrt:

## 2. Program to find square root using do-while in java

This is another method to find the square root without using Math.sqrt() in java. Here we used the so-while loop. We take the user input passed to squareRootResult() method and run the do-while loop. After the calculation, we return the result back and display it as shown in the program below.

Output:

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