add: random password generator in java

Author: singodiyashubham87

randomPasswordGenerator.java

@@ -0,0 +1,53 @@
+package Master.JavaExample;  
+  
+import org.passay.CharacterRule;  
+import org.passay.EnglishCharacterData;  
+import org.passay.PasswordGenerator;  
+  
+// create class GeneratePasswordExample1 to generate a random and secure password  
+public class GeneratePasswordExample1 {  
+      
+    // main() method start  
+    public static void main(String args[]) {  
+          
+        // call the generatePassword() method to generate a random password using the Passay library  
+        String pass = generateSecurePassword();  
+          
+        // print Passay generated password  
+        System.out.println("The Passay generated password is:"+pass);  
+          
+    }  
+      
+    // create generateSecurePassword() method that find the secure password and returns it to the main() method  
+    public static String generateSecurePassword() {  
+          
+        // create character rule for lower case  
+        CharacterRule LCR = new CharacterRule(EnglishCharacterData.LowerCase);  
+        // set number of lower case characters  
+        LCR.setNumberOfCharacters(2);  
+  
+        // create character rule for upper case  
+        CharacterRule UCR = new CharacterRule(EnglishCharacterData.UpperCase);  
+        // set number of upper case characters  
+        UCR.setNumberOfCharacters(2);  
+  
+        // create character rule for digit  
+        CharacterRule DR = new CharacterRule(EnglishCharacterData.Digit);  
+        // set number of digits  
+        DR.setNumberOfCharacters(2);  
+  
+        // create character rule for lower case  
+        CharacterRule SR = new CharacterRule(EnglishCharacterData.Special);  
+        // set number of special characters  
+        SR.setNumberOfCharacters(2);  
+          
+        // create instance of the PasswordGenerator class   
+        PasswordGenerator passGen = new PasswordGenerator();  
+          
+        // call generatePassword() method of PasswordGenerator class to get Passay generated password  
+        String password = passGen.generatePassword(8, SR, LCR, UCR, DR);  
+          
+        // return Passay generated password to the main() method   
+        return password;  
+    }  
+}