Create RandomPasswordGenerator.java

Author: devmalik7

java/RandomPasswordGenerator/RandomPasswordGenerator.java

@@ -0,0 +1,28 @@
+import java.util.Random;
+import java.util.Scanner;
+
+public class RandomPasswordGenerator {
+	public static String generatePassword(int len) {
+		//String containing alphanumeric characters i.e [a-z and A-Z and 0-9]
+		String str = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+		//Random class to generate random idex value of the alphanumeric string
+		Random random = new Random();
+		//StringBuilder is used to append the random alphanumeric characters
+		StringBuilder sb = new StringBuilder();
+		for(int i=0;i<len;i++) {
+			sb.append(str.charAt(random.nextInt(str.length())));
+		}
+		//Converting StringBuilder to String and returning the randomly generated password
+		return sb.toString();
+	}
+
+	public static void main(String[] args) {
+		Scanner sc = new Scanner(System.in);
+		int len;
+		System.out.println("Enter the length of the password to be generated:");
+		len = sc.nextInt();
+		System.out.println(generatePassword(len));
+
+	}
+
+}