-------------------File reader-------------------------------------------------------
package samplecode;
// Reading data from a file using FileReader 
 
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;

public class Exp12 {

	public static void main(String[] args) throws Exception {
		// variable declaration
		int ch;

		// check if File exists or not
		FileReader fr = null;
		try {
			fr = new FileReader("D:\\Demo.txt");
		} catch (FileNotFoundException fe) {
			System.out.println("File not found");
		}

		// read from FileReader till the end of file
		while ((ch = fr.read()) != -1)
			System.out.print((char) ch);

		// close the file
		fr.close();
	}
}
------------------------File Writer----------------------------------
//Creating a text File using FileWriter 
import java.io.FileWriter; 
import java.io.IOException; 
class Exp12 
{ 
	public static void main(String[] args) throws IOException 
	{ 
		// Accept a string 
		String str = "File Handling in Java using "+ 
				" FileWriter and FileReader"; 

		// attach a file to FileWriter 
		FileWriter fw=new FileWriter("D:\\output.txt"); 

		// read character wise from string and write 
		// into FileWriter 
		for (int i = 0; i < str.length(); i++) 
			fw.write(str.charAt(i)); 

		System.out.println("File written successfully...."); 
		//close the file 
		fw.close(); 
	} 
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