4.3 Name your source code file Hw1_1.java . Write a program that prompts the user for the name of a Java source code

file. The program shall read the source code file and output the contents to a new file named the same as the input

file, but with a .txt file name extension (e.g., if the input file is foo.java then the output file shall be named

foo.java.txt). Each line of the input file shall be numbered with a line number (formatted as shown below) in the

output file. For example, if the user enters Hw1_1.java as the name of the input file and Hw1_1.java contains:

//***************************************************************

// CLASS: Hw1_1 (Hw1_1.java)

//***************************************************************

public class Hw1_1 {

public static void main(String[] pArgs) {

}

public Hw1_1() {

}

}

then the contents of the output file Hw1_1.java.txt would be:

[001] //***************************************************************

[002] // CLASS: Hw1_1 (Hw1_1.java)

[003] //***************************************************************

[004] public class Hw1_1 {

[005] public static void main(String[] pArgs) {

[006] }

[007] public Hw1_1() {

[008] }

[009] }

Hint: to print an integer as shown above in a field of width 3 with leading 0's use the printf() method with a format

specifier of %03d.

}