What are wrapper classes in java?
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When is an object subject to garbage collection?
1).Is Object class abstract or not? 2).Is main method(public static void main(String args[])low priority thread or high priority thread?
What is difference between arraylist and list in java?
In a my eclipse editor if i want to switch from jdk 1.4 to jdk 1.6 how to do that???? Initially i have jdk1.4
can we create a instance for intwerface?
What are the restrictions imposed by a Security Manager on Applets?.
Is java written in c?
What is boolean used for?
Q) I have a ArrayList object, in that object i have added 5 integer values, 5 float values, 5 string values. Now question is how can delete particular type of data ( i.e all int values or all float values or string values) in that list object at a time?
What will happen if we cannot mention "finally" in Java Program ???
How do you make a thread in java?
Explain the difference between map and flatmap stream operation?