- ✕この概要は、複数のオンライン ソースに基づいて AI を使用して生成されました。元のソース情報を表示するには、[詳細情報] リンクを使用します。
To calculate the square root of a number in Java, you can use the Math.sqrt() method from the java.lang.Math package. This method returns the square root of a given number as a double.
Example: Using Math.sqrt()
public class SquareRootExample {public static void main(String[] args) {double number = 64;double result = Math.sqrt(number);System.out.println("Square root of " + number + " is: " + result);}}コピーしました。✕コピーOutput:
Square root of 64 is: 8.0コピーしました。✕コピーAlternative: Using Math.pow()
You can also calculate the square root using the formula number^(1/2) with the Math.pow() method.
public class SquareRootWithPow {public static void main(String[] args) {double number = 81;double result = Math.pow(number, 0.5);System.out.println("Square root of " + number + " is: " + result);}}コピーしました。✕コピーWithout Built-in Methods
If you want to avoid built-in methods, you can use an iterative approach like the Newton-Raphson method.
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