Which of the following statements are true about setLayout() method in java.awt.ScrollPane 1.Does nothing. 2.Throws UnsupportedMethodException when called. 3.It is not overriden in java.awt.ScrollPane. 4.Sets the layout to the specified Layout Manager. Answer is 1.Why? I think 4. 2.)What means is demon threads ?I read book JAVA 2 EXAM CARM does not include the concept.Whether I need to know it,if I want pass EXAM?
Question 2: You can read about daemon threads and how they are different from user thread here: http://www.javaranch.com/ubb/Forum24/HTML/001830.html I do not think you are required to know about daemon threads for the exam, but it is good if you do � you feel more confident.