how to convert string to int in Java -

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• how convert string int in java? 28 answers
• how convert int string? 18 answers

i'm working on caesar cipher example in want different keys user , 1 key decrypt original text , got problem, here code

public static void main(string[] args) {     scanner user_input= new scanner(system.in);     string plaintext = "university of malakand";     string key;     key = user_input.next();      ceasercipher cc = new ceasercipher();      string ciphertext = cc.encrypt(plaintext,key);     system.out.println("your plain  text :" + plaintext);     system.out.println("your cipher text :" + ciphertext);      string cplaintext = cc.decrypt(ciphertext,key);     system.out.println("your plain text  :" + cplaintext); } 

it shows error on line

    string ciphertext = cc.encrypt(plaintext,key); 

it shows me error on key incompatible types:

string cannot converted int

what can do?

ask following questions self first.

• what method want parameter?
• why both incompatible?
• what string ciphertext = cc.encrypt(plaintext,key); mean?
• key string or int?

use methods integer.parseint(string value) or integer.valueof(string value) conversion.