How to obtain text logged into a file in java

Question

This might be a weird question, but I really don't know how to ask it. I want to get any information logged into a file and make it accessible (e.x - a program logs into the file, and I get that value as a String in my project).

I was afraid to continue reading after "This might be a weird question, but I really don't know how to ask it." lolz — Tucker, Mar 16 '13 at 03:52
Can you please provide more details, and any code that you have tried? — Sudhanshu Umalkar, Mar 16 '13 at 03:52
This is a very broad question. You probably want to search Google for something like "java read input from file", try something, and come back with a more specific question when you get stuck. Welcome to SO! — knoight, Mar 16 '13 at 03:54

score 0 · Answer 1 · answered Mar 16 '13 at 04:20

Using java.util.Scanner, you can read a txt file and add it's contents to a string.

public static void main(String[] args) throws FileNotFoundException {
  File source = new File("filename.txt");
  Scanner scanner = new Scanner(source);
  String myString = "";
  while(scanner.hasNext()) {
    myString = scanner.nextLine() + " ";
  }
    scanner.close()
 }

score 0 · Answer 2 · answered Mar 16 '13 at 04:21

Please provide more details about what you want to do? If you just need to read the log file then you can use Reader/Writer API in java to read/write text files.

Use BufferedReader class, which has readLine() method to read entire line at once. Sample program to read a file using BufferedReader class

How to obtain text logged into a file in java

2 Answers2