Given the code fragment:

What is the result?

Given the code fragment:

What is the result?

Given the code fragment:
public void recDelete (String dirName) throws IOException {
File [ ] listOfFiles = new File (dirName) .listFiles();
if (listOfFiles ! = null && listOfFiles.length >0) {
for (File aFile : listOfFiles) {
if (aFile.isDirectory ()) {
recDelete (aFile.getAbsolutePath ());
} else {
if (aFile.getName ().endsWith (".class"))
aFile.delete ();
}
}
}
}
Assume that Projectscontains subdirectories that contain .classfiles and is passed as an argument to the recDelete ()method when it is invoked.
What is the result?

Given the code fragment:
Map<Integer, String> books = new TreeMap<>();
books.put (1007, "A");
books.put (1002, "C");
books.put (1001, "B");
books.put (1003, "B");
System.out.println (books);
What is the result?

Given the code fragment:

Which statement can be inserted into line n1 to print 1,2; 1,10; 2,20;?