question about reading text file

[aurore]

hello! i am new to java
i don't know how to read the text from *.txt file and then return the string to the application screen
can anyone help?

[Norm]

There have been posts here of simple programs that do both. Look thru previous posts or use search for 'readLine()' and System.out.println() for example.

[Hasnain]

BufferedReader buff = new BufferedReader( new FileReader("*.txt") ) ;
String line = buff.readLine();
System.out.println(line);
(* = any file name)

[aurore]

it works! thanks
but if the text file contains more than 1 line, how can all lines be display until null?

[prometheuzz]

import java.io.*;

public class Test {
    public static void main(String[] args) {
        try {
            BufferedReader buff = new BufferedReader( new FileReader("test.txt") ) ;
            
            String line = buff.readLine();

            while(line != null) {
                System.out.println(line);
                line = buff.readLine();
            }
        }
        catch(Exception e) { e.printStackTrace(); }
    }
}

[aurore]

thanks! prometheuzz
i tried and it works! however, i have some more question...
i tried to use StringTokenizer for seperating my text in the file... however, it only works for the first line of my text file...

import java.io.*;
import java.util.*;

public class Test {
    public static void main(String[] args) {
        try {
            BufferedReader buff = new BufferedReader( new FileReader("test.txt") ) ;
            String line = buff.readLine();
            StringTokenizer st = new StringTokenizer (line, ",");


            while(st.hasMoreTokens()) {
                System.out.println(st.nextToken());
                //line = buff.readLine();
            }
				buff.close();
        }
        catch(Exception e) { e.printStackTrace(); }
    }
	 
}

[Norm]

Your code only uses StringTokenizer on the first line. You need another while() loop surrounding the one you have that will continue to readLine() until it returns null.
The outer loop will readLine() until null is returned, the inner loop will process the tokens for the last line read.

Give it a try. Or wait until someone else writes the code for you.