Why hashmap is used in java?
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What causes memory leak in java?
What is more advisable to create a thread, by implementing a Runnable interface or by extending Thread class?
What is consumer interface?
Given: 11. public static void main(String[] args) { 12. Integer i = uew Integer(1) + new Integer(2); 13. switch(i) { 14. case 3: System.out.println(”three”); break; 15. default: System.out.println(”other”); break; 16. } 17. } ‘What is the result? 1 three 2 other 3 An exception is thrown at runtime. 4 Compilation fails because of an error on line 12.
Can a final variable be initialized in constructor?
Is 0 an even number?
What is boolean data type in java?
Differentiate between nested and inner class in java.
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What is an escape character in java?
Difference between abstract class and Interfaces?
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what is abstract method with example?
What modifiers are used with an inner class which is a member of an outerclass?