What is a concrete classes? Is Java object class is concrete class?
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How do you make an arraylist empty in java?
How can you take string into InputStream?
Will the jvm load the package twice at runtime?
Explain the difference between abstract class and interface in java?
Can an object be null?
Why we should declare the variables as static and final in interfaces?
Can a lock be acquired on a class?
Why arraylist is used in java?
Do loops java?
What technique is carried out to find out if a particular string is empty?
What is computer compiler?
Hey buddy.. can you please tell me about the use of marker interface? And is there any link between marker interface and factory methods? Thanks in advance.