The text book I am using is introduction to java programming 9th edition by Lian

Question

The text book I am using is introduction to java programming 9th edition by Liang

Programming exercise 19.12 at page 734 of the textbook. IMPORTANT: Please use Java from command line ONLY for question 4A. Copy the screenshots of your execution from command line and paste to your submitted report. (Combine files) Write a utility program that combines the files together into a new file using the following command: java Exercisel9_12 SourceFilel . . . SourceFilen TargetFile The command combines SourceFilel. . . . , and SourceFilen into TargetFile. Programming exercise 19.13 at page 735 of the textbook. (Combine files GUI) Rewrite Exercise 19.12 with a GUI, as shown in Figure 19.20b. Figure 19.20b is as follows:

Explanation / Answer

solution for exercise 19.12.it is detailed please rate with 5 star

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

public class Exercise19_12 {

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

// Check usage

if (args.length < 2) {

System.out.println(

"Usage: java Exercise19_12 SourceFile1 ... SoureFilen TargetFile");

System.exit(1);

}

// The last file TargetFile is for output

BufferedOutputStream output = new BufferedOutputStream(

new FileOutputStream(new File(args[args.length - 1])));

for (int i = 0; i < args.length - 1; i++) {

BufferedInputStream input = new BufferedInputStream(

new FileInputStream(new File(args[i])));

int value;

while ((value = input.read()) != -1) {

output.write(value);

}

input.close();

}

output.close();

}

}

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