JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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How to read file content line by line in java?


Description:

Below example shows how to read file content line by line. To get this, you have to use BufferedReader object. By calling readLine() method you can get file content line by line. readLine() returns one line at each iteration, we have to iterate it till it returns null.


Code:
package com.java2novice.files;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

public class ReadLinesFromFile {

	public static void main(String a[]){
		BufferedReader br = null;
		String strLine = "";
		try {
			br = new BufferedReader( new FileReader("fileName"));
			while( (strLine = br.readLine()) != null){
				System.out.println(strLine);
			}
		} catch (FileNotFoundException e) {
			System.err.println("Unable to find the file: fileName");
		} catch (IOException e) {
			System.err.println("Unable to read the file: fileName");
		}
	}
}
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Knowledge Centre
Class, Constructor and Primitive data types
Class is a template for multiple objects with similar features and it is a blue print for objects. It defines a type of object according to the data the object can hold and the operations the object can perform. Constructor is a special kind of method that determines how an object is initialized when created. Primitive data types are 8 types and they are: byte, short, int, long, float, double, boolean, char.
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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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