I want to split some Strings in java on the colon character.

The format of the strings are: Account:Password.

I want to separate the tokens: Account and Password. What's the best way to do this?

• java
• parsing
• input
• split

See Ernest Friedman-Hill's answer first.

String namepass[] = strLine.split(":"); 
String name = namepass[0]; 
String pass = namepass[1];
// do whatever you want with 'name' and 'pass'

Not sure what part you need help with, but note that the split() call in the above will never return anything other than a single-element array, since readLine(), by definition, stops when it sees a \n character. split(":"), on the other hand, ought to be very handy for you...

You need to use split(":"). Try this-

import java.util.ArrayList;
import java.util.List;

class Account {
    String username;
    String password;

    public Account(String username, String password) {
        super();
        this.username = username;
        this.password = password;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

}

class Solution {
    public static void main(String[] args) {
        while(.....){//read till the end of the file
            String input = //each line
            List<Account> accountsList = new ArrayList<Account>();
            String splitValues[] = input.split(":");
            Account account = new Account(splitValues[0], splitValues[1]);
            accountsList.add(account);  
        }
        //perform your operations with accountList
    }
}

Hope it helps!