What is passing by reference in java?
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what is the difference b/w design pattern and architecture
What are the differences between unchecked exception, checked exception, and errors?
What is meant by class loader? How many types are there? When will we use them?
Which is not Object in Java?
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"); } }
Can a hashset contain duplicates java?
worst case complexities of Quick sort and Merge sort.
Which programming language is most secure?
What is file in java?
what is the difference between a threads start() and run() methods? : Java thread
Why is multithreading important?
What is meant by Servelet? What are the parameters of service method?