How do you limit limit the size of a string that someone can input in java?

Question

i have to validate a title but i have to limit the user entry to 6-100 characters. how would limit the string to these parameters

Answer 1

Check out this sample code to see how you can do this:

import java.io.*;

public class ReadCharacters

{

public static void main (String[] args)

{

// Get user input

System.out.print("Enter your string (must be between 6-100 characters inclusive): ");

//  Get the input stream reader

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

String inputString = "";

int len = 0;

// read in the lines

do

{

inputString = getLine();

len = inputString.length();

if(len < 6 || len > 100)

{

System.out.print("\nSorry, you must input between 6-100 characters. Try again: ");

}

}

while(len < 6 || len > 100);

// Print the output line

System.out.println("\nYour input was: " + inputString);

}



private static String getLine()

{

String input = "";

try

{

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

input = br.readLine();

}

//  Handle any exceptions

catch (IOException ioe)

{

System.out.println("There was an I/O error.");

System.exit(1);

}

return input;

}

}  // end of ReadCharacters class