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What is struts in java?
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Why is prepared Statement, Callable Statement used for? What is the need of Batch updates?
public class BatchTest { public static void main(String[] args) { Runtime run = Runtime.getRuntime(); try { Process p = run.exec("cmd start /c D:/test.bat"); System.out.println(p.exitValue()); } catch (Exception e) { e.printStackTrace(); } System.out.println("FINISHED"); } }
What is meant by distributed application? Why are we using that in our application?
What is an exception in java?
How can you share data between two thread in Java?
Why we override equals() method?
What is integer size in java?
Marker interface means , interface which has no methods.Then what is the necessity of its usage.I read "it tells the compiler that it should be treated differently ". "It is used to store state of an object". But still am not clear.Please explain clearly.
Can we instantiate interface in java?
Can we extend the String class?
Why stringbuffer is faster than string?
What is a conditional equation?
Core Java 
