what is polymorhism what is inheritance? what is Abstract n Interface? what if two interfaces have same method and a concrete class is implementing both the interfaces. Will there be a compilation error? What are mutable and immutable classes? How can u make a class mutable? when will u use dem ...explain with example? what is overriding and overloading? what is garbage collection? what is Thread? how do dey communicate? what are the different ways of implementing ? have u used any messaging technologies? what is synchronization? what are some additions in java 1.5? what are generics? whst is advanced for loop? what is finally block? can u have a try in finally? yes!! can u have a finally in finally? how do you write junits? when is a object eligible for garbage collection?explain? a = null and b has ref to a will b be eligible to be garbage collected? sql questions like diff joins? how do dey work? exception handling? what is marker interface? what is the need??
2133how can you retrive information from database by using hashmap/arraylist ,plz explain with example briefly?
1 7060how can u handle run time exception in java? explain with brief explanation with examples?
CTS,
2 1043623. Storage space in java is of the form Stack Queue Heap List 24. What is java code embedded in a web page known as Applets Servlets scriptlets snippets 25. Which of the following attributes are compulsory with an
TCS,
2476class A{ some variables; public void a()throws Excepion1,Exception2{....} } class B extends A{ variables... public void a()throws E2,E3{.....} } Qns: here override of methods occurs or not,ore else wil give any compilation error or run properly..plz tell me briefly whts happening with the above codes....
4 8726
What is procedure overloading?
Is string is a keyword in java?
What are keywords give examples?
What are the steps involved to write rmi based programs?
What is nullpointerexception in java?
Describe 2 different ways to concatenate two strings.
What is the difference between iterator and enumeration ?
What are packages in java?
what methods would you overwrite in java.lang.object class?
What is double word?
What happens when you add a double value to a string?
What is a boolean structure?
What is ph and buffers?
When a thread is executing synchronized methods , then is it possible to execute other synchronized methods simultaneously by other threads?
Can I learn java without any programming experience?