CS506 Grand Quiz Combined

FTP(FILE Transmissionn Protocol)works on_____________port.

• 21

Which of the following is NOT tre for java inner classes?

Which statement from the following statements is true abot a java Anontmous Inner Class

• It is difficult to nderstand
• It has no name
• It is much shorter

• All of the given options

While running following ExceptionExample java class on command line withot passing command line arguments gives_______exception.

Public class ExceptionExample{

Systrem.ot.printIn(args[0]);

• Array index out of bond exception

Which of the following streams is a byte oriented stream?

• FileInputStream

Which of the following statements is true about primitive data types and reference data types?

• Primitive data types are created on stack whereas references are created on heap

Which command of the following commands is used compile”JavaTest” java file’s code?

• Javac java Test. Java

Which of the following statements is true regarding paintComponent()method?

WindowListener interface contains__________methods

• Seven

HashMap takes key as a/an___________

• Object

Adapter classes have been defined for listener interfaces except______in…

• ActionListener

Interface imposes_____________structre on any class that uses interface

• Design

Which of the following is NOT true abot painComponent()method?

• Tells the components border(if any)to paint.

An object of Sutdent java class is creating and setting its value in Test java class____________error is there in given code.

Public class Test{

Student s2=newStudent();

S2->setName(“Aslam”);

• setName method should not be accessed by arrow operator

int I =(int)(Math.random()*5); // will generate random bumbers between_________

• 0 & 4

Mouse events can be trapped for_________GUL component.

• jBtton

• All of given

• jFrame
• jPanel

In given lines of code Employee is superclass, Teacher is child class__________is applying Employee e=new Teacher();

• Upcasting Teacher to Employee type

Which of the following statements is true regarding paintChildren()method?

________is required in order to get an object from collection.

• Down casting

In java ,adpter classes have been defined for the following listener interfaces except for_______interface

• itemListener

In ResultSetMetaData methods_________method returns the number of columns in the result set.