When an exception is thrown by a method, it must declare or handle it.A method can declare the exception using the keyword throws with the method signature and a list of exceptions type so that the calling methods can guard themselves.
For example:
public void myMethod() throws IOException, ArithemeticException{//some code here that might cause the exception}If a method does not declare the exception then it must handle the exception by providing the try/catch block.For example:public void myMethod(){try{//some code here that might cause the arithematic exception}catch(ArithematicException e){}}
By:Jalees
Date:2011-01-09 00:00:00
When an exception is thrown by a method, it must declare or handle it.A method can declare the exception using the keyword throws with the method signature and a list of exceptions type so that the calling methods can guard themselves.
For example:
public void myMethod() throws IOException, ArithemeticException{//some code here that might cause the exception}If a method does not declare the exception then it must handle the exception by providing the try/catch block.For example:public void myMethod(){try{//some code here that might cause the arithematic exception}catch(ArithematicException e){}}
By:Sumit Tripathi
Date:2018-05-15 00:00:00
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Explain. Two types of multi-tasking.
Can applet in different page communicate with each other?
What is the difference between == & .equals().
What is the difference between abstract class & Interface.
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What is use of static, final variable?
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What is difference between Unicast & Multicast model?
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When you navigate from one applet to another what are the methods called?
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What are the ways you can handle exception ?
When is try, catch block used ?
What is finally method in Exceptions ?
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What are the other modifiers ?
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What is method Overriding ? What is it in OOPS ?
Does java support multi dimensional arrays ?
Is multiple inheritance used in Java ?
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Is there any tool in java that can create reports ?
What are the OOPS concepts in Java ?
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What are all the listeners in java and explain ?
What is meant by an adapter class ?
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What are the types of methods in mouse listeners ?
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What is the default layout of the panel and frame ?
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What is the difference between Process and Threads ?
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When is update method called ?
How will you communicate between two Applets ?
Have you ever used HashTable and Dictionary ?
What is the base class for all swing components ?
What is Difference between AWT and Swing ?
How does thread synchronization occurs inside a monitor?
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Is there any tag in HTML to upload and download files ?
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What are the benefits of Swing over AWT ?
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What is the Layout for ToolBar ?
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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 ?
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What is the difference between CGI and Servlets?
What is the use of Interface ?
Why Java is not fully objective oriented ?
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What is function in a constructor ?
What is function 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 ?
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 ?
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What is features for using Java?
How does Java 2.0 differ from Java 1.0?
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Explain about the three-tier model?
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What is Wrapper class. Is String a Wrapper Class?
What are the restriction for static method Purpose of the file class?
What is 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?
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Differeence between canvas class & graphics class?
Explain about Superclass & subclass.
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What is use of throws exception?s
What is finally in exception handling Vector class?
What will happen to the Exception object after exception handling?
Explain. Two types of multi-tasking.
Explain Two ways to create the thread.
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 ?
Describe difference between method overriding and overloading?
What is the restriction on an Overridden methods’ accessibility ?
Can a method be overloaded by different return type but same argument type?
Can a method be overloaded by different return type but same argument type?
What is a "stateless" protocol?
What is constructor chaining and how to do this in Java?
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How to ensure size of a primitive data type?
Elaborate the Garbage Collection process in Java ?
What is a difference between An interface and an abstract class?
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In DB access where to write the query. In JSP or servlet?
Explain difference between Constructer and a method
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What is serialization in Java?
Describe difference between an error and an exception?
What are differences between procedural and object oriented language?
What are differences between procedural and object oriented language?
What is the difference between a Class and an Object ?
Why threads block or enters to waiting state on I/O?
What are transient variables in java?
How Observer and Observable are used?
What is the difference between yield() and sleep()?
Can we call finalize() method ?
What is the initial state of a thread when it is created and started?
Can we declare an anonymous class as both extending a class and implementing an interface?
What is the differences between boolean & operator and && operator?
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How can you force garbage collection in java?
How can you call a constructor from another constructor ?
How can you call the constructor of super class ?
What must be the order of catch blocks when catching more than one exception?
How can we call a method or variable of the super class from child class ?
If you are overriding equals() method of a class, what other methods you might need to override ?
Does garbage collection guarantee that a program will not run out of memory?
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What must a class do to implement an interface?
What is the difference between notifyand notifyAll method ?
What are the different states of a thread ?
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What is the difference between readers and streams?
Why we cannot override static methods?
When does a compiler supplies a default constructor for a class?
What will happen if an exception is not caught ?
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What is the difference between a switch statement and an if statement?
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What are the restrictions placed on static method ?
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Why ArrayList is faster than Vector?
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What is Nested top-level classes?
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What factors are used to decide using synchronized or volatile?
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