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Java Tutorial : Java IO (LineNumberReader) |
Java Tutorial : Java IO (LineNumberReader) |
Java Tutorial : Java IO (LineNumberReader) |
Welcome Hello ByeLineNumberReaderDemo.java
import java.io.FileReader; import java.io.LineNumberReader; public class LineNumberReaderDemo { public static void main(String[] args) throws Exception { LineNumberReader lineNumberReader = null; FileReader fileReader = null; try { fileReader = new FileReader("myfile.txt"); lineNumberReader = new LineNumberReader(fileReader); String line; while ((line = lineNumberReader.readLine()) != null) { int lineNumber = lineNumberReader.getLineNumber(); System.out.println(lineNumber + " = " + line); } } finally { if (lineNumberReader != null) { /* * When you are finished reading characters * from the LineNumberReader you should * remember to close it. Closing a * LineNumberReader will also close the * Reader instance from which the * LineNumberReader is reading. */ lineNumberReader.close(); } } } }Output
1 = Welcome 2 = Hello 3 = ByeRefer:
https://docs.oracle.com/javase/8/docs/api/index.html?java/io/LineNumberReader.html
https://sites.google.com/site/ramj2eev1/home/javabasics/JavaIODemo_LineNumberReaderDemo_App.zip?attredirects=0&d=1
Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/JavaIODemo_LineNumberReaderDemo_App
Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/8270b2c7cbb37f975ee9fc66e47a041db3aa4063/BasicJava/JavaIODemo_LineNumberReaderDemo_App/?at=master
See also:
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