Question

How to read file into StringBuffer using FileInputStream in Java

Answer 1

package javaapplication1;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

public class JavaApplication1 {

    public static void main(String[] args) throws IOException {

        File file = new File("d://data.txt");

        int ch;
        StringBuffer sb = new StringBuffer("");
        FileInputStream fis = null;

        try {
  
            fis = new FileInputStream(file);

            while ((ch = fis.read()) != -1) {
                sb.append((char) ch);
            }

            fis.close();

        } catch (FileNotFoundException e) {
            System.out.println(e.getMessage());                 
        } catch (IOException ioe) {
            System.out.println(ioe.getMessage());
        }

        System.out.println(sb);
  }
}
  
/*
run:
 
Java
C#
C++
PHP
  
*/

 

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