Java InputStreamReader Read readFileOneLine(String filename, String keyInLine)

Description

read File One Line

License

Open Source License

Declaration

public static String readFileOneLine(String filename, String keyInLine) throws Exception 

Method Source Code

//package com.java2s;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;

import java.io.InputStreamReader;

public class Main {
    public static String readFileOneLine(String filename, String keyInLine) throws Exception {
        File f = new File(filename);
        if (!f.exists())
            return null;

        FileInputStream fis = null;
        InputStreamReader fsr = null;
        BufferedReader reader1 = null;

        String line;// www  .  j a  v  a  2  s  .  c o m
        try {
            fis = new FileInputStream(filename);
            fsr = new InputStreamReader(fis, "UTF-8");
            reader1 = new BufferedReader(fsr);

            while ((line = reader1.readLine()) != null) {
                if (line.indexOf(keyInLine) != -1) {
                    break;
                }
            }
        } finally {
            try {
                if (reader1 != null)
                    reader1.close();
            } catch (Exception e) {
                e.printStackTrace();
            }

            try {
                if (fsr != null)
                    fsr.close();
            } catch (Exception e) {
                e.printStackTrace();
            }

            try {
                if (fis != null)
                    fis.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

        return line;
    }
}

Related

1. readFileFromResource(String filename)
2. readFileIntoLines(File file)
3. readFileIntoLinesOfLongs(File file)
4. readFileLineByLine(final File filePath)
5. readFileList(File file)
6. readFileOrResource(String source)
7. readFiles(String[] files, String encoding)
8. readFileSB(File f)
9. readFileToLines(File file)