When should I use a singleton?
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What is lifetime variable?
How many types of gc are there in java?
What is Java Annotations?
What is a conditional statement explain with example?
How could Java classes direct program messages to the system console, but error messages, say to a file?
Which is illegal identifier in java?
What is the difference between preemptive scheduling and time slicing?
Can a class be protected in java?
When throws keyword is used?
What are constructors in java?
What are command line arguments?
List out five keywords related to exception handling ?