Interview Questions - Advanced Java
181.
What method must be implemented by all threads?
All tasks must implement the run() method, whether they are a subclass of Thread or implement the Runnable interface.
182.
What methods are used to get and set the text label displayed by a Button object?
getLabel() and setLabel().
183.
Which Component subclass is used for drawing and painting?
Canvas.
184.
What are synchronized methods and synchronized statements?
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.
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