Question

There are two text files, whose names are given by two String variables, file1 and file2. These text files have the same number of lines. Write a sequence of statements that creates a new file whose name consists concatenating the names of the two text files (with a "-" in the middle) and whose contents of merging the lines of the two files. Thus, in the new file, the first line is the first line from the first file, the second line is the first line from the second file. The third line in the new file is the second line in the first file and the fourth line is the second line from the second file, and so on. When finished, make sure that the data written to the new file has been flushed from its buffer and that any system resources used during the course of running your code have been released.

Answer 1

Answer:

The code to this question can be given as:

Code:  

//creating a file class object.

File f1 = new File();

f1.File(file1);  //call parameterized constructor .

File f2 = new File();

f2.File(file2);  //call parameterized constructor .

//creating Scanner class object for user input and pass parameter

Scanner ob1 = new Scanner(f1);

Scanner ob2 = new Scanner(f2);

//create String variable  File3 that holds the value of file1 and file2

String File3 = file1 + "-" + file2;  

//create File class object and pass parameter File3.

File files = new File(File3);

//creating PrintWriter class object.

PrintWriter ob = new PrintWriter();

ob. PrintWriter(file3);  //call parameterized constructor .

while(ob1.hasNextLine())  //loop

{

//print value.

System.out.println(ob1.nextLine());  

System.out.println(ob2.nextLine());

}

output.close();

output.close();

Explanation:

In the above java code firstly we create the File class object.Then we call the parameterized constructor of this class. Then we create the scanner class object. In the input time, we pass the parameter to scanner class object and we declare the String variable that is File3. In this variable, we add both file1 and file2 value with concatenating "-". Then we create the PrintWriter class object and call their constructor. At the last, we declare the loop that prints all the values.