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. Define how can I implement this logic?

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What is data encapsulation?

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Is jdk required for netbeans?

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Are the actual permissions for the application defined at run-time or compile-time? : java security

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Why do we need framework in java?

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What is a singleton in java?

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What is an action class in java?

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Why do we need new date and time api in java se 8?

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What are the advantages of java sockets?

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why the sleep method does not leave the lock and wait method leave the lock

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What is the content reside in Use case Document?

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Which version of jdk is required for netbeans 8.0 2?

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