Given the following statement, which statement will write "Calvin" to the file DiskFile.txt? PrintWriter diskOut = new PrintWriter("DiskFile.txt");
A) System.out.println(diskOut, "Calvin");
B) DiskFile.println("Calvin");
C) PrintWriter.println("Calvin");
D) diskOut.println("Calvin");

Question

Quizplus · Accepted Answer

The PrintWriter object is named diskOut, so to write "Calvin" to the file DiskFile.txt, we need to use the println method of this object as follows: diskOut.println("Calvin"). Option A is incorrect because System.out.println will print "Calvin" to the console, not to the file. Option B is incorrect because there is no object named DiskFile, and even if there was, we would need to use the println method of the PrintWriter object, not of the file object. Option C is incorrect because PrintWriter is a class name, not an object name, so we cannot directly call methods on it. We need to call the methods on the PrintWriter object, which is named diskOut in this case.

Given the Following Statement, Which Statement Will Write "Calvin" to the File