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IntroductiontoComputerScience_D684/Algorithms/Squareroot.java

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+import java.util.Scanner;
+
+/**
+ * Squareroot
+ */
+public class Squareroot {
+
+  public static void main(String[] args) {
+    Scanner sc = new Scanner(System.in);
+    System.out.println("enter your guess");
+    double square = sc.nextDouble();
+
+    // initial the difference
+    double epsilon = 1;
+    // initial guess
+    double guess = square / 2.0;
+
+    while (epsilon > 0.001) {
+      double newGuess = (guess + square / guess) / 2.0;
+      epsilon = Math.abs(square - guess * guess);
+      guess = newGuess;
+    }
+
+    System.out.println("The sqaure root of " + square + " is " + guess);
+    sc.close();
+  }
+}