What is the use of string and stringbuffer?
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What are the advantages of user defined functions?
Why do we use return statement?
Name few "optional" classes introduced with java 8 ?
What modifiers can be used with a local inner class?
Why method overriding is used?
"we cannot create an object of interface but we can create a variable of it".diacuss the statement with the help of an example.
What does the “static” keyword mean?
If we allocate the memory using 'new' & de-allocated using 'free' then what will happen?
what is use of session tracking ?with example?
Explain class A{} class B{} class C{} all the three classes are saved in a single file name, what the name should i provide to the file ,in what file name should i run the program? Ple Explain
What is the difference between an array and an array list?
Name the packages in JDK?