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  Home Placement Paper Kit Technical Questions ► Java ▼

361.Can a finally block exist with a try block but without a catch?

362.What are the constraints imposed by overriding on exception handling?

363.How does finally block differ from finalize() method?

364. What is a package?

365.What is the difference between Hashtable and HashMap?

366. Can an Interface implement another Interface?

367.Can a class be defined inside an Interface?

368.Which OO Concept is achieved by using overloading and overriding?

369. What is the difference between Pass By Value and Pass By Reference?

360. What is the purpose of using RMISecurityManager in RMI?

371. When is AlreadyBoundException thrown and by which method?

372. What restrictions are placed on method overloading?

373.What is Externalizable?

374. Can we define private and protected modifiers for variables in interfaces?

375. How many bits are used to represent Unicode, ASCII, UTF-16, and UTF-8 characters?

376.Explain Assertions with a code exmaple

377. What is the difference between using bind() and rebind() methods of Naming Class?

378. What is the role of Remote Interface in RMI?

379. Can protected or friendly features be accessed from different packages?

380.What is the default port used by RMI Registry?

381. What is the basic principle of RMI architecture?

382. Can an anonymous class implement an interface and extend a class at the same time?

383. Does garbage collection guarantee that a program will not run out of memory?

384.Why is the main method declared static?

385.When will you define a method as static?

386. I don't want my class to be inherited by any other class. What should i do?

387.What is the access scope of a protected method?

388. Can an object's finalize() method be invoked while it is reachable?

389. What is an Abstract Class and what is it's purpose?

390. What is the difference between JVM and JRE

391. What will you do if VM exits while printing "OutOfMemoryError" and increasing max heap size doesn't help?

392. What's the difference between the methods sleep() and wait()

393. Can a method be overloaded based on different return type but same argument type ?

394. What are the practical benefits, if any, of importing a specific class rather than an entire package (e.g. import java.net.* versus import java.net.Socket)?

395.What is a Java package and how is it used?

396. What restrictions are placed on the location of a package statement within a source code file?

397. Which characters may be used as the second character of an identifier,but not as the first character of an identifier?

398. What are order of precedence and associativity, and how are they used?

399.What is the base class for all swing components?

400.What is the final keyword denotes?


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