Question: What are synchronized methods and synchronized statements?
Answer: Synchronized methods are methods that are used to control access to an object. A thread only executes a synchronized method after it has acquired the lock for the method's object or class. Synchronized statements are similar to synchronized methods. A synchronized statement can only be executed after a thread has acquired the lock for the object or class referenced in the synchronized statement.
Question: What are three ways in which a thread can enter the waiting state?
Answer: A thread can enter the waiting state by invoking its sleep() method, by blocking on I/O, by unsuccessfully attempting to acquire an object's lock, or by invoking an object's wait() method. It can also enter the waiting state by invoking its (deprecated) suspend() method.
Question: Can a lock be acquired on a class?
Answer: Yes, a lock can be acquired on a class. This lock is acquired on the class's Class object.
Question: What's new with the stop(), suspend() and resume() methods in JDK
Answer: The stop(), suspend() and resume() methods have been deprecated in JDK 1.2.
Question: What is the preferred size of a component?
Answer: The preferred size of a component is the minimum component size that will allow the component to display normally.
Question: What method is used to specify a container's layout?
Answer: The setLayout() method is used to specify a container's layout.
Question: Which containers use a FlowLayout as their default layout?
Answer: The Panel and Applet classes use the FlowLayout as their default layout.
Question: What is thread?
Answer: A thread is an independent path of execution in a system.
Question: What is multithreading?
Answer: Multithreading means various threads that run in a system.
Question: How does multithreading take place on a computer with a single CPU?
Answer: The operating system's task scheduler allocates execution time to multiple tasks. By quickly switching between executing tasks, it creates the impression that tasks execute sequentially.
We have 1000s of tutorials on our website. Search Tutorials tutorials on our website.
Posted on: January 9, 2008 If you enjoyed this post then why not add us on Google+? Add us to your Circles