Why there are some null interface in JAVA? What does it mean? Give some null interface in JAVA?
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What is numeric promotion?
What are order of precedence and associativity, and how are they used?
If a multi threaded Java program has started numerous number of threads, at any point in time how to know which thread is currently executing/running ?
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Explain 5 io best practices?
What is a pattern what is an anti pattern?
What is public static?
Why we can not force Garbage Collection?
Explain different types of wrapper classes in java?
why use interface? if interface declear a method implement in class. why direct implement method in class
What does this() represent, and how is it used in Java?
I want to control database connections in my program and want that only one thread should be able to make database connection at a time. How can I implement this logic?
What do you understand by garbage collection in Java? Can it be forced to run?