Program to Read text from file using FileReader in java file IO




We will read c:/myFile.txt


c:/myFile.txt looks like this >
You are learning File IO from javaMadeSoEasy.com

BufferedReader's read() method will read 1 character (2byte / 16-bit) at a time.



Program 1 to Read text from file using FileReader’s read() in java file IO >


import java.io.FileReader;
import java.io.IOException;
/** JavaMadeSoEasy.com */
public class ReadFileUsingFileReader {
   public static void main(String... args) {
          FileReader fr = null;
          try {
                 fr = new FileReader("c:/myFile.txt");
                 System.out.println("Reading from text file using FileReader > ");
                 int ch;
                 while ((ch = fr.read()) != -1) { //read till end of file
                       System.out.print((char) ch);
                 }
          } catch (IOException e) {
                 e.printStackTrace();
          } finally {
                 try {
                       if (fr != null)
                              fr.close(); //close FileReader
                 } catch (IOException e) {
                       e.printStackTrace();
                 }
          }
   }
}
/* OUTPUT
Reading from text file using FileReader >
You are learning File IO from javaMadeSoEasy.com   
*/




Program 2 to Read text from file using FileReader’s read(charArray) method in java file IO >


import java.io.FileReader;
import java.io.IOException;
/** JavaMadeSoEasy.com */
public class ReadFileUsingFileReader {
   public static void main(String... args) {
          FileReader fr = null;
          try {
                 fr = new FileReader("c:/myFile.txt");
                 System.out.println("Reading from text file using FileReader > ");
                
                 char[] charArray = new char[1000];
                 fr.read(charArray); // reads the content of file in the array
                 for (char ch : charArray)
                       System.out.print(ch); // display all the characters one by one
          } catch (IOException e) {
                 e.printStackTrace();
          } finally {
                 try {
                       if (fr != null)
                              fr.close(); //close FileReader
                 } catch (IOException e) {
                       e.printStackTrace();
                 }
          }
   }
}
/* OUTPUT
Reading from text file using FileReader >
You are learning File IO from javaMadeSoEasy.com   
*/





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