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Q. Can two threads on same ConcurrentHashMap object access it concurrently
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Q. The class RuntimeException is the superclass of which of the following classes?
Q. Which method returns a reference to the currently executing thread object?
Q. Which type of polymorphism is nothing but the method overloading in java?
Q. ------------------- is an example of container class
Q. Which of the following is used to test the operation?
Q. what is the output of below java program?
Q. If a negative value is used for an array index, ____.
Q. What is the purpose of the substring() method of a String object in Java?
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