What is regex in java?
Why enumeration is faster than iterator?
What is the concept of multithreading?
How do you add an element to a hashset in java?
What is a static method in java?
What is the difference between overloading and overriding a function?
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How to create a base64 decoder in java8?
Java.util.regex consists of which classes?
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how jvm allocates memory for stack?
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