您能给我相当于C ++代码的Java吗? [英] Can you please give the java equivalent of c++ code?

问题描述

我只是想检查密码是否包含特殊字符?

I just wana check if the password contain special character or not?

 char[] NewPswrd = NewPswrdField.getPassword();//this line is of java

int length=NewPswrd.length;
for(int i=0;i<length;i++)
	{
		
              char*  digits = "!@#$%^&*()_-+=";
			while(*digits)
        {
        if((NewPswrd[i]==*digits++))
        {
        }  
}
}

推荐答案

％^& *()_- + =" ;; 同时(*位) { 如果(((NewPswrd [i] == **数字++]) { } } }

%^&*()_-+="; while(*digits) { if((NewPswrd[i]==*digits++)) { } } }

与C ++不同的是Java具有正则表达式支持，尽管c ++ 11和boost库具有正则表达式支持

Java unlike C++ has regular expression support, though c++ 11 and boost library has it

import java.util.regex.Matcher;
import java.util.regex.Pattern;
class PasswordValidator{
 
      private Pattern pattern;
          private Matcher matcher;
 
          private  final String PASSWORD_PATTERN = 
              "((?=.*\\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[@#

%]).{6,20})"; public PasswordValidator(){ pattern = Pattern.compile(PASSWORD_PATTERN); } /** * Validate password with regular expression * @param password password for validation * @return true valid password, false invalid password */ public boolean validate(String password){ matcher = pattern.matcher(password); return matcher.matches(); } public static void main(String arg[]) { PasswordValidator pv = new PasswordValidator(); // test 1 String pw = "dharmac1A@"; if(pv.validate (pw)) { System.out.println("Valid"); } else { System.out.println("InValid"); } // test 2 pw = "iamnotvalidpassword"; if(pv.validate (pw)) { System.out.println("Valid"); } else { System.out.println("InValid"); } // test 3 pw = "dharmatejachalla"; if(pv.validate (pw)) { System.out.println("Valid"); } else { System.out.println("InValid"); } } }

%]).{6,20})"; public PasswordValidator(){ pattern = Pattern.compile(PASSWORD_PATTERN); } /** * Validate password with regular expression * @param password password for validation * @return true valid password, false invalid password */ public boolean validate(String password){ matcher = pattern.matcher(password); return matcher.matches(); } public static void main(String arg[]) { PasswordValidator pv = new PasswordValidator(); // test 1 String pw = "dharmac1A@"; if(pv.validate (pw)) { System.out.println("Valid"); } else { System.out.println("InValid"); } // test 2 pw = "iamnotvalidpassword"; if(pv.validate (pw)) { System.out.println("Valid"); } else { System.out.println("InValid"); } // test 3 pw = "dharmatejachalla"; if(pv.validate (pw)) { System.out.println("Valid"); } else { System.out.println("InValid"); } } }

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