Why do we need hashmap in java?
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what is the use of Clonable,and serializable interface?
when,where and how to use abstract class and interface
what is the difference between String s="hello"; and String s=new String("hello");?
Which is better list or arraylist in java?
what is the need of the Ajax?
what is meant by abstract class?
What is lastindexof in java?
What is meant by string is immutable?
What is static import?
What is passed by reference and pass by value ?
Write a java program that prints all the values given at command-line.
wht is mean by dirty read?