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.(Do not concern yourself with any possible exceptions here-- assume they are handled elsewhere.)

Answer 1

We can answer the above question using the below code.

Code:  

File f1 = new File();

f1.File(file1);

File f2 = new File();

f2.File(file2);

Scanner ob1 = new Scanner(f1);

Scanner ob2 = new Scanner(f2);

String File3 = file1 + "-" + file2;  

File files = new File(File3);

PrintWriter ob = new PrintWriter();

ob. PrintWriter(file3);

while(ob1.hasNextLine())  

{

System.out.println(ob1.nextLine());  

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

}

output.close();

output.close();

Explanation:

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