Reg ex for password validation

Question

hi help me for password validation......
Password should contain 6 to 8 characters, at least one letter and at least one number, contain no spaces and no special characters (e.g. &, >, *,$)

Answer 1

String[] tests = {"abc1def", "2abcdef", "abcdef", "123456"};
for(String t: tests) {
  if(t.matches("^(?=\\D*\\d)(?=[^a-zA-Z]*[a-zA-Z]).*$")) {
    System.out.println("Accepted: "+t);
  } else {
    System.out.println("Rejected: "+t);
// Accepted: abc1def
// Accepted: 2abcdef
// Rejected: abcdef
// Rejected: 123456@OP: this does not answer your question, but it will get you started. Try to finish it yourself.