Java在数组中分割字符串

Question

I have a string array with username;password format such as

login[] = { "jake;pass", "oliver;king" } etc...

I then have a for statement to set the password depending on the username

for(int k = 0; k < login.length; k++){
    if(login[k].??? == username){
        password = ???
    }

How can I use substring or split to verify the username before the ";" as well as the password after the ";" ? I want to set password = everything after the ; and login[k].substring/split to everything before the ;

Answer 1

Don't try to condense too much. It'll end up working against you.

Something like this should work:

for (int k = 0; k < login.length; k++) {
    String[] split = login[k].split(";");
    String user = split[0];
    String pass = split[1];

    if (user.equals(username)) { //make sure to  use equals() for Objects
        password = pass;
    }
}

I really hope you're not actually storing plaintext passwords for anything that needs to be secure, though.

Answer 2

I don't think you can do it inline. Maybe some stuff like this:

for(int k = 0; k < login.length; k++){
    String[] s = login[k].split(";");
    if(s[0].equals(username)){
        password = s[1];
    }
}

Answer 3

您可以使用从String拆分的方法，如下所示：

String[] parts = login[k].split(";");