What is data persistence in java?
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when Can an object reference be cast to an interface reference?
What is repository pattern in java?
How do you run an executable jar file?
Is java singleton thread safe?
When a thread is created and started, what is its initial state?
What is type inference? Is type inference available in older versions like java 7 and before 7 or it is available only in java se 8?
Can a dead thread be started again?
What is meant by rest api in java?
What is dialect in java?
What is java lang?
What is a bean class?
What is the use of servlet in java?