Explain the difference between serializable and externalizable in java?
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How we can make copy of a java object?
What is the best way to findout the time/memory consuming process?
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Difference between JDK, JRE, JVM
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What is the differnence between String Buffer and String builder despite having knowledge that String builder is faster than String Buffer and last one is threadsafe.please tell another important difference.
explain about casting of objects?
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Under what conditions is an object’s finalize() method invoked by the garbage collector?
what is the replacement method of stop() of thread
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