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  Home Placement Paper Kit Technical Questions ► Java ▼

401. What will happen to the Exception object after exception handling?

402.What are the approaches that you will follow for making a program very efficient?

403. What classes of exceptions may be caught by a catch clause?

404.Can an Interface extend another Interface?

405.Can an Interface be defined inside a class?

406. If i only change the return type, does the method become overloaded?

407.What is the difference between executeQuery () and execute() ?

408. What are four drivers available in JDBC?

409. What is the difference between the Font and FontMetrics classes?

410.Exceptions can be caught or rethrown to a calling method. True/False?

411. What are the methods in Object?

412. What should I use a ServerSocket or DatagramSocket in my applications?

413. Can we declare a static variable inside a method?

414. Can a abstract class be declared final?

415.What are the restriction imposed on a static method or a static block of code?

416. Can a class be declared as protected?

417. What is the purpose of declaring a variable as final?

418. How a dead thread can be started?

419.Name three Component subclasses that support painting.

420.What is a Layout Manager and what are its different types and their advantages?

421. How will you add a panel to a frame?

422. What is the difference between process and threads?

423.Can abstract class be instantiated?

424. Define Checked and Unchecked exception.

425.Does a class inherit constructors from its superclass?

426.How a Java object be locked for exclusive use by a given thread?

427. Why Java does not support pointers?

428. Can you change the reference of the final object?

429. Why main method of Java has public static void?

430. What is difference between Path and Classpath?

431.What are Java Modifiers?

432. What are local variables?

433. Should a main method be compulsorily declared in all java classes?

434.Does Java support multiple inheritance?

435. Is 'sizeof' a keyword?

436. When are static and non static variables of a class initialized?

437. What are expressions,statements and blocks in Java?

438. What are different primitive datatypes in Java?

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

440.What is the significance of ListIterator?


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