Java :: Frequently
Asked Questions
- Can a main() method of class be invoked in another class?
- What is the difference between java command line arguments and C command line arguments?
- What is the difference between == & .equals
- What is the difference between abstract class & Interface.
- What is singleton class & it's implementation.
- Use of static,final variable
- Examples of final class
- Difference between Event propagation & Event delegation
- Difference between Unicast & Multicast model
- What is a java bean
- What is synchronized keyword used for.
- What are the restrictions of an applet & how to make the applet access the local machines resources.
- What is reflect package used for & the methods of it.
- What is serialization used for
- Can methods be overloaded based on the return types ?
- Why do we need a finalze() method when Garbage Collection is there ?
- Difference between AWT and Swing compenents ?
- Is there any heavy weight component in Swings ?
- Can the Swing application if you upload in net, be compatible with your browser?
- What should you do get your browser compatible with swing components?
- What are the methods in Applet ?
- When is init(),start() called ?
- When you navigate from one applet to another what are the methods called?
- What is the difference between Trusted and Untrusted Applet ?
- What is Exception ?
- What are the ways you can handle exception ?
- When is try,catch block used ?
- What is finally method in Exceptions ?
- What are the types of access modifiers ?
- What is protected and friendly ?
- What are the other modifiers ?
- Is synchronised modifier ?
- What is meant by polymorphism ?
- What is inheritance ?
- What is method Overloading ? What is this in OOPS ?
- What is method Overriding ? What is it in OOPS ?
- Does java support multi dimensional arrays ?
- Is multiple inheritance used in Java ?
- How do you send a message to the browser in JavaScript ?
- Does javascript support multidimensional arrays ?
- Is there any tool in java that can create reports ?
- What is meant by Java ?
- What is meant by a class ?
- What is meant by a method ?
- What are the OOPS concepts in Java ?
- What is meant by encapsulation ? Explain with an example
- What is meant by inheritance ? Explain with an example
- What is meant by polymorphism ? Explain with an example
- Is multiple inheritance allowed in Java ? Why ?
- What is meant by Java interpreter ?
- What is meant by JVM ?
- What is a compilation unit ?
- What is meant by identifiers ?
- What are the different types of modifiers ?
- What are the access modifiers in Java ?
- What are the primitive data types in Java ?
- What is meant by a wrapper class ?
- What is meant by static variable and static method ?
- What is meant by Garbage collection ?
- What is meant by abstract class
- What is meant by final class, methods and variables ?
- What is meant by interface ?
- What is meant by a resource leak ?
- What is the difference between interface and abstract class ?
- What is the difference between public private, protected and static
- What is meant by method overloading ?
- What is meant by method overriding ?
- What is singleton class ?
- What is the difference between an array and a vector ?
- What is meant by constructor ?
- What is meant by casting ?
- What is the difference between final, finally and finalize ?
- What is meant by packages ?
- What are all the packages ?
- Name 2 calsses you have used ?
- Name 2 classes that can store arbitrary number of objects ?
- What is the difference between java.applet.* and java.applet.Applet ?
- What is a default package ?
- What is meant by a super class and how can you call a super class ?
- What is anonymous class ?
- Name interfaces without a method ?
- What is the use of an interface ?
- What is a serializable interface ?
- How to prevent field from serialization ?
- What is meant by exception ?
- How can you avoid the runtime exception ?
- What is the difference between throw and throws ?
- What is the use of finally ?
- Can multiple catch statements be used in exceptions ?
- Is it possible to write a try within a try statement ?
- What is the method to find if the object exited or not ?
- What is meant by a Thread ?
- What is meant by multi-threading ?
- What is the 2 way of creating a thread ? Which is the best way and why?
- What is the method to find if a thread is active or not ?
- What are the thread-to-thread communcation ?
- What is the difference between sleep and suspend ?
- Can thread become a member of another thread ?
- What is meant by deadlock ?
- How can you avoid a deadlock ?
- What are the three typs of priority ?
- What is the use of synchronizations ?
- Garbage collector thread belongs to which priority ?
- What is meant by time-slicing ?
- What is the use of 'this' ?
- How can you find the length and capacity of a string buffer ?
- How to compare two strings ?
- What are the interfaces defined by Java.lang ?
- What is the purpose of run-time class and system class
- What is meant by Stream and Types ?
- What is the method used to clear the buffer ?
- What is meant by Stream Tokenizer ?
- What is serialization and de-serialisation ?
- What is meant by Applet ?
- How to find the host from which the Applet has originated ?
- What is the life cycle of an Applet ?
- How do you load an HTML page from an Applet ?
- What is meant by Applet Stub Interface ?
- What is meant by getCodeBase and getDocumentBase method ?
- How can you call an applet from a HTML file
- What is meant by Applet Flickering ?
- What is the use of parameter tag ?
- What is audio clip Interface and what are all the methods in it ?
- What is the difference between getAppletInfo and getParameterInfo ?
- How to communicate between applet and an applet ?
- What is meant by event handling ?
- What are all the listeners in java and explain ?
- What is meant by an adapter class ?
- What are the types of mouse event listeners ?
- What are the types of methods in mouse listeners ?
- What is the difference between panel and frame ?
- What is the default layout of the panel and frame ?
- What is meant by controls and types ?
- What is the difference between a scroll bar and a scroll panel.
- What is the difference between list and choice ?
- How to place a component on Windows ?
- What are the different types of Layouts ?
- What is meant by CardLayout ?
- What is the difference between GridLayout and GridBagLayout
- What is the difference between menuitem and checkboxmenu item.
- What is meant by vector class, dictionary class , hash table class,and property class ?
- Which class has no duplicate elements ?
- What is resource bundle ?
- What is an enumeration class ?
- What is meant by Swing ?
- What is the difference between AWT and Swing ?
- What is the difference between an applet and a Japplet
- What are all the components used in Swing ?
- What is meant by tab pans ?
- What is the use of JTree ?
- How can you add and remove nodes in Jtree.
- What is the method to expand and collapse nodes in a Jtree
- What is the use of JTable ?
- What is meant by JFC ?
- What is the class in Swing to change the appearance of the Frame in Runtime.
- How to reduce flicking in animation ?
- What is meant by Javabeans ?
- What is JAR file ?
- What is meant by manifest files ?
- What is Introspection ?
- What are the steps involved to create a bean ?
- Say any two properties in Beans ?
- What is persistence ?
- What is the use of beaninfo ?
- What are the interfaces you used in Beans ?
- What are the classes you used in Beans ?
- What is the diffrence between an Abstract class and Interface
- What is user defined exception ?
- What do you know about the garbate collector ?
- What is the difference between C++ & Java ?
- How do you communicate in between Applets & Servlets ?
- What is the use of Servlets ?
- In an HTML form I have a Button which makes us to open another page in 15 seconds. How will do you that ?
- What is the difference between Process and Threads ?
- How will you initialize an Applet ?
- What is the order of method invocation in an Applet ?
- When is update method called ?
- How will you communicate between two Applets ?
- Have you ever used HashTable and Dictionary ?
- What are statements in JAVA ?
- What is JAR file ?
- What is JNI ?
- What is the base class for all swing components ?
- What is JFC ?
- What is Difference between AWT and Swing ?
- Considering notepad/IE or any other thing as process, What will Happen if you start notepad or IE 3 times? Where 3 processes are started or 3 threads are started ?
- How does thread synchronization occurs inside a monitor ?
- How will you call an Applet using a Java Script function ?
- Is there any tag in HTML to upload and download files ?
- Why do you Canvas ?
- How can you push data from an Applet to Servlet ?
- What are the benefits of Swing over AWT ?
- Where the CardLayout is used ?
- What is the Layout for ToolBar ?
- What is the difference between Grid and GridbagLayout ?
- How will you add panel to a Frame ?
- What is the corresponding Layout for Card in Swing ?
- What is light weight component ?
- What is bean ? Where it can be used ?
- What is difference in between Java Class and Bean ?
- What is the mapping mechanism used by Java to identify IDL language ?
- Diff between Application and Applet ?
- What is serializable Interface ?
- What is the difference between CGI and Servlet ?
- What is the use of Interface ?
- Why Java is not fully objective oriented ?
- Why does not support multiple Inheritance ?
- What it the root class for all Java classes ?
- What is polymorphism ?
- Suppose If we have variable ' I ' in run method, If I can create one or More thread each thread will occupy a separate copy or same variable will be shared ?
- What is Constructor and Virtual function? Can we call Virtual
- Funciton in a constructor ?
- Why we use OOPS concepts? What is its advantage ?
- What is the difference in between C++ and Java ? can u explain in detail?
- What is the exact difference in between Unicast and Multicast object ? Where we will use ?
- How do you sing an Applet ?
- In a Container there are 5 components. I want to display the all the components names, how will you do that one ?
- Why there are some null interface in java ? What does it mean ?
- Give me some null interfaces in JAVA ?
- Tell me the latest versions in JAVA related areas ?
- What is meant by class loader ? How many types are there? When will we use them ?
- What is meant by flickering ?
- What is meant by cookies ? Explain ?
- Problem faced in your earlier project
- How OOPS concept is achieved in Java
- Features for using Java
- How does Java 2.0 differ from Java 1.0
- Public static void main - Explain
- What are command line arguments
- Explain about the three-tier model
- Difference between String & StringBuffer
- Wrapper class. Is String a Wrapper Class
- What are the restriction for static method Purpose of the file class
- Default modifier in Interface
- Difference between Interface & Abstract class
- Can abstract be declared as Final
- Can we declare variables inside a method as Final Variables
- What is the package concept and use of package
- How can a dead thread be started
- Difference between Applet & Application
- Life cycle of the Applet
- Can Applet have constructors
- Differeence between canvas class & graphics class
- Explain about Superclass & subclass
- What is AppletStub
- Explain Stream Tokenizer
- What is the difference between two types of threads
- Checked & Unchecked exception
- Use of throws exception
- What is finally in exception handling Vector class
- What will happen to the Exception object after exception handling
- Two types of multi-tasking
- Two ways to create the thread
- Synchronization
- I/O Filter
- Can applet in different page communicate with each other
- Why Java is not 100 % pure OOPS ? ( EcomServer )
- When we will use an Interface and Abstract class ?
- How to communicate 2 threads each other ?
0 comments:
Post a Comment