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What is Incremental Low Pause Collector?
What is Incremental Low Pause Collector? The incremental low pause collector is a generational collector similar to the default collector. The minor collections are done with the same young generation collector as the default collector. Do not use either -XX:+UseParallelGC or -XX:+UseParNewGC with t... 2013-03-27, 2311👍, 0💬

What modifiers are allowed for methods in an Interface?
What modifiers are allowed for methods in an Interface? Only public and abstract modifiers are allowed for methods in interfaces. 2013-02-06, 2311👍, 0💬

Can a private method of a superclass be declared within a subclass?
Can a private method of a superclass be declared within a subclass? Sure. A private field or method or inner class belongs to its declared class and hides from its subclasses. There is no way for private stuff to have a runtime overloading or overriding (polymorphism) features. 2012-08-31, 2311👍, 0💬

What is the purpose of the System class?
What is the purpose of the System class? The purpose of the System class is to provide access to system resources. 2012-11-27, 2310👍, 0💬

If I want an object of my class to be thrown as an exception object, what should I do?
If I want an object of my class to be thrown as an exception object, what should I do? The class should extend from Exception class. Or you can extend your class from some more precise exception type also. 2013-05-30, 2309👍, 0💬

What is covariant return type?
What is covariant return type? A covariant return type lets you override a superclass method with a return type that subtypes the superclass method's return type. So we can use covariant return types to minimize upcasting and downcasting. class Parent { Parent foo () { System.out.println ("Parent fo... 2013-03-07, 2308👍, 0💬

What is the basic difference between the 2 approaches to exception handling.
520. What is the basic difference between the 2 approaches to exception handling. 1. try catch block and 2. specifying the candidate exceptions in the throws clause? When should you use which approach? In the first approach as a programmer of the method, you urself are dealing with the exception. Th... 2013-06-03, 2307👍, 0💬

What is the ResourceBundle class?
What is the ResourceBundle class? The ResourceBundle class is used to store locale-specific resources that can be loaded by a program to tailor the program's appearance to the particular locale in which it is being run. 2013-01-18, 2307👍, 0💬

What is the purpose of the Runtime class?
What is the purpose of the Runtime class? The purpose of the Runtime class is to provide access to the Java runtime system. 2012-10-22, 2307👍, 0💬

What is Externalizable?
What is Externalizable? Externalizable is an Interface that extends Serializable Interface. And sends data into Streams in Compressed Format. It has two methods, writeExternal(ObjectOuput out) and readExternal(ObjectInput in) 2013-06-18, 2305👍, 0💬

What does it mean that a method or class is abstract?
What does it mean that a method or class is abstract? An abstract class cannot be instantiated. Only its subclasses can be instantiated. You indicate that a class is abstract with the abstract keyword like this: public abstract class Container extends Component { Abstract classes may contain abstrac... 2013-02-19, 2303👍, 0💬

How can the Checkbox class be used to create a radio button?
How can the Checkbox class be used to create a radio button? By associating Checkbox objects with a CheckboxGroup. 2012-12-18, 2301👍, 0💬

Which class should you use to obtain design information about an object?
Which class should you use to obtain design information about an object? The Class class is used to obtain information about an object's design. 2012-11-30, 2301👍, 0💬

Do not use the String contatenation operator in lengthy loops or other places where performance could suffer. Is that true?
Do not use the String contatenation operator in lengthy loops or other places where performance could suffer. Is that true? Yes. 2013-04-08, 2299👍, 0💬

What is a platform?
What is a platform? A platform is the hardware or software environment in which a program runs. Most platforms can be described as a combination of the operating system and hardware, like Windows 2000 and XP, Linux, Solaris, and MacOS. 2013-03-29, 2295👍, 0💬

Can I import same package/class twice? Will the JVM load the package twice at runtime?
Can I import same package/class twice? Will the JVM load the package twice at runtime? One can import the same package or same class multiple times. Neither compiler nor JVM complains abt it. And the JVM will internally load the class only once no matter how many times you import the same class. 2013-05-09, 2294👍, 0💬

Which Component subclass is used for drawing and painting?
Which Component subclass is used for drawing and painting? Canvas 2013-01-30, 2294👍, 0💬

How does multithreading take place on a computer with a single CPU?
How does multithreading take place on a computer with a single CPU? 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. 2012-12-14, 2294👍, 0💬

Which package is always imported by default?
Which package is always imported by default? The java.lang package is always imported by default. 2013-01-09, 2293👍, 0💬

What interface is extended by AWT event listeners?
What interface is extended by AWT event listeners? All AWT event listeners extend the java.util.EventListener interface. 2013-01-14, 2291👍, 0💬

Is sizeof a keyword?
Is sizeof a keyword? The sizeof operator is not a keyword in Java. 2013-04-11, 2290👍, 0💬

Name three subclasses of the Component class.
Name three subclasses of the Component class. Box.Filler, Button, Canvas, Checkbox, Choice, Container, Label, List, Scrollbar, or TextComponent 2012-10-19, 2289👍, 0💬

What is the Java Virtual Machine?
What is the Java Virtual Machine? The Java Virtual Machine is a software that can be ported onto various hardware-based platforms. 2013-02-20, 2288👍, 0💬

Can applets communicate with each other?
Can applets communicate with each other? At this point in time applets may communicate with other applets running in the same virtual machine. If the applets are of the same class, they can communicate via shared static variables. If the applets are of different classes, then each will need a refere... 2013-06-14, 2285👍, 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