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What happens when a thread cannot acquire a lock on an object?
What happens when a thread cannot acquire a lock on an object? If a thread attempts to execute a synchronized method or synchronized statement and is unable to acquire an object's lock, it enters the waiting state until the lock becomes available. 2012-11-14, 2500👍, 0💬

What does read() return at end of file?
What does read() return at end of file? 0 A defined (but false) 0 value is the proper indication of the end of file for read() and sysread(). 2013-09-09, 2497👍, 0💬

What method must be implemented by all threads?
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. 2013-06-17, 2496👍, 0💬

What is the difference between Swing and AWT components?
What is the difference between Swing and AWT components? AWT components are heavy-weight, whereas Swing components are lightweight. Heavy weight components depend on the local windowing toolkit. For example, java.awt.Button is a heavy weight component, when it is running on the Java platform for Uni... 2012-08-22, 2496👍, 0💬

What are the legal operands of the instanceof operator?
What are the legal operands of the instanceof operator? The left operand is an object reference or null value and the right operand is a class, interface, or array type. 2013-01-01, 2495👍, 0💬

Which method of the Component class is used to set the position and size of a component?
Which method of the Component class is used to set the position and size of a component? setBounds() 2012-09-27, 2495👍, 0💬

What is the List interface?
What is the List interface? The List interface provides support for ordered collections of objects. 2013-04-10, 2494👍, 0💬

What is native code?
What is native code? The native code is code that after you compile it, the compiled code runs on a specific hardware platform. 2013-02-21, 2493👍, 0💬

You are planning to do an indexed search in a list of objects. Which of the two Java collections should you use: ArrayList or Li
You are planning to do an indexed search in a list of objects. Which of the two Java collections should you use: ArrayList or LinkedList? ArrayList 2013-04-16, 2492👍, 0💬

What is the difference between a Scrollbar and a ScrollPane?
What is the difference between a Scrollbar and a ScrollPane? A Scrollbar is a Component, but not a Container. A ScrollPane is a Container. A ScrollPane handles its own events and performs its own scrolling. 2013-04-05, 2492👍, 0💬

What is the Locale class?
What is the Locale class? The Locale class is used to tailor program output to the conventions of a particular geographic, political, or cultural region. 2012-10-25, 2492👍, 0💬

What is the SimpleTimeZone class?
What is the SimpleTimeZone class? The SimpleTimeZone class provides support for a Gregorian calendar. 2012-07-04, 2492👍, 0💬

What is the common usage of serialization?
What is the common usage of serialization? Whenever an object is to be sent over the network, objects need to be serialized. Moreover if the state of an object is to be saved, objects need to be serilazed. 2013-05-21, 2491👍, 0💬

How to check two arrays to see if contents have the same types and contain the same elements?
How to check two arrays to see if contents have the same types and contain the same elements? One of options is to use the equals() method of Arrays class. Arrays.equals(a, b); If the array types are different, a compile-time error will happen. 2012-09-06, 2490👍, 0💬

How can a dead thread be restarted?
How can a dead thread be restarted? A dead thread cannot be restarted. 2013-01-15, 2489👍, 0💬

What are pass by reference and passby value?
What are pass by reference and passby value? Pass By Reference means the passing the address itself rather than passing the value. Passby Value means passing a copy of the value to be passed. 2013-04-24, 2486👍, 0💬

What is the return type of a program's main() method?
What is the return type of a program's main() method? A program's main() method has a void return type. 2012-12-21, 2484👍, 0💬

How can you force garbage collection?
How can you force garbage collection? You can't force GC, but could request it by calling System.gc(). JVM does not guarantee that GC will be started immediately. 2012-08-03, 2484👍, 0💬

How do I mix JSP and SSI #include? What is the difference between include directive & jsp:include action?
How do I mix JSP and SSI #include? What is the difference between include directive & jsp:include action? Difference between include directive and 1. provides the benifits of automatic recompliation,smaller class size ,since the code corresponding to the included page is not present in the servl... 2013-08-06, 2482👍, 0💬

If an object is garbage collected, can it become reachable again?
If an object is garbage collected, can it become reachable again? Once an object is garbage collected, it ceases to exist. It can no longer become reachable again. 2013-01-02, 2482👍, 0💬

What is clipping?
What is clipping? Clipping is the process of confining paint operations to a limited area or shape. 2012-10-08, 2481👍, 0💬

What are some alternatives to inheritance?
What are some alternatives to inheritance? Delegation is an alternative to inheritance. Delegation means that you include an instance of another class as an instance variable, and forward messages to the instance. It is often safer than inheritance because it forces you to think about each message y... 2013-02-08, 2480👍, 0💬

Which Container method is used to cause a container to be laid out and redisplayed?
Which Container method is used to cause a container to be laid out and redisplayed? validate() 2013-04-12, 2479👍, 0💬

What is the argument type of a program's main() method?
What is the argument type of a program's main() method? A program's main() method takes an argument of the String[] type. 2012-10-24, 2479👍, 0💬

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.NET C C++ CSS DBA General HTML Java JavaScript JSP JUnit MySQL Networking Oracle Perl Perl PHP PL/SQL RSS Software QA SQL Server Struts Unix Windows XHTML XML