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The >> operator carries the sign bit when shifting right. The >>> zero-fills bits that have been shifted out.

A thread is a execution in a program. The life cycle of a thread include −

• Newborn state
• Runnable state
• Running state
• Blocked state
• Dead state

Type casting means treating a variable of one type as though it is another type.

Private constructor is used if you do not want other classes to instantiate the object and to prevent subclassing.T

The dot operator(.) is used to access the instance variables and methods of class objects.It is also used to access classes and sub-packages from a package.

It is a collection returned by the values() method of the Map Interface, It contains all the objects present as values in the map.

If you need to frequently add and remove elements from the middle of the list and only access the list elements sequentially, then LinkedList should be used. If you need to support random access, without inserting or removing elements from any place other than the end, then ArrayList should be used.

Deletion in linked list is fast because it involves only updating the next pointer in the node before the deleted node and updating the previous pointer in the node after the deleted node.

ArrayList can grow dynamically and provides more powerful insertion and search mechanisms than arrays.

No, constructor cannot be inherited.

Binding refers to the linking of a procedure call to the code to be executed in response to the call. Dynamic binding means that the code associated with a given procedure call is not known until the time of the call at run-time.

Runtime polymorphism or dynamic method dispatch is a process in which a call to an overridden method is resolved at runtime rather than at compile-time. In this process, an overridden method is called through the reference variable of a superclass.

Synchronized methods are methods that are used to control access to an object. A synchronized statement can only be executed after a thread has acquired the lock for the object or class referenced in the synchronized statement.

The Locale class is used to tailor program output to the conventions of a particular geographic, political, or cultural region.

A thread is in the ready state as initial state after it has been created and started.

It is not necessary that each try block must be followed by a catch block. It should be followed by either a catch block or a finally block.

An error is an irrecoverable condition occurring at runtime. Such as OutOfMemory error. Exceptions are conditions that occur because of bad input etc. e.g. FileNotFoundException will be thrown if the specified file does not exist.

We can pass them around as method parameters where a method expects an object. It also provides utility methods.

Null, unless it is defined explicitly.

Program throws "NoSuchMethodError" error at runtime.

An abstract class can have instance methods that implement a default behavior. An Interface can only declare constants and instance methods, but cannot implement default behavior and all methods are implicitly abstract. An interface has all public members and no implementation.

A class loader is an object that is responsible for loading classes. The class ClassLoader is an abstract class.

Yes

The default value of the boolean type is false.

Integer / and % can result in the throwing of an ArithmeticException.

A dead thread cannot be restarted.

The garbage collector invokes an object's finalize() method when it detects that the object has become unreachable.

The Java runtime system generates RuntimeException and Error exceptions.

Component class is the immediate super class.

When a window is repainted by the AWT painting thread, it sets the clipping regions to the area of the window that requires repainting.

The eight primitive types are byte, char, short, int, long, float, double, and boolean.

The purpose of the System class is to provide access to system resources.

A private variable may only be accessed within the class in which it is declared.

The = operator is right associative.

Panel is the immediate superclass. A panel provides space in which an application can attach any other component, including other panels.

Garbage collection does not guarantee that a program will not run out of memory. It is possible for programs to use up memory resources faster than they are garbage collected. It is also possible for programs to create objects that are not subject to garbage collection.

The Collections API is a set of classes and interfaces that support operations on collections of objects.

Synchronization is the capability to control the access of multiple threads to shared resources. synchronized keyword in java provides locking which ensures mutual exclusive access of shared resource and prevent data race.

A transient variable is a variable that may not be serialized during Serialization and which is initialized by its default value during de-serialization,

The ArithmeticException is thrown when integer is divided by zero or taking the remainder of a number by zero. It is never thrown in floating-point operations.

The code sleep(2000); puts thread aside for exactly two seconds. The code wait(2000), causes a wait of up to two second. A thread could stop waiting earlier if it receives the notify() or notifyAll() call. The method wait() is defined in the class Object and the method sleep() is defined in the class Thread.

Yes, use this() syntax.

When copying elements between different arrays, if the source or destination arguments are not arrays or their types are not compatible, an ArrayStoreException will be thrown.

Yes, since inheritance inherits everything from the super class and interface, it may make the subclass too clustering and sometimes error-prone when dynamic overriding or dynamic overloading in some situation.

Constructors must have the same name as the class and can not return a value. They are only called once while regular methods could be called many times.

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 Unix platform, it maps to a real Motif button.

Yes, just add a main() method to the applet.

If there is a button instance called b1, you may add menu short cut by calling b1.setMnemonic('F'), so the user may be able to use Alt+F to click the button.

Sub class inherits all the public and protected methods and the implementation. It also inherits all the default modifier methods and their implementation.

It is part of the analysis of a program and describes a situation that a program might encounter and what behavior the program should exhibit in that circumstance.