Java Interview Questions... 12

• Meaning - Abstract classes, abstract methods
• How do you force Garbage Collector in Java?
• Difference - Java,C++
• Difference between == and equals method
• Difference - Interface and Class
• Explain Java security model
• Explain working of Java Virtual Machine (JVM)
• Difference : Java Beans, Servlets
• Difference : AWT, Swing
• Disadvantages of Java
• difference between this() and super()
• How does exeception handling mechanism work in Java?
• When 'finally' block gets executed.
• What is BYTE Code ?
• Can unreachable object become reachable again?
• What gives java it's "write once and run anywhere" nature?
• Does Java have "goto"?
• Difference - Preemptive Scheduling and Time Slicing
• Checked and UnChecked Exception Difference
• What is the meaning of "final" keyword?
• Can I create final executable from Java?
• Explain Garbage collection mechanism in Java
• Why Java is not 100% pure object oriented language?
• What are interfaces? or How to support multiple inhertance in Java?
• How to use C++ code in Java Program?
• Difference between "APPLET" and "APPLICATION"
• Types of inner classes
• Explain the difference between HashMap and HashTable?
• Difference - Iterators in C++ and iterators in Java
• What's meant by keyword 'static'
• Different - public, private, protected and package level access
• How would you strip HTML tags using String replaceAll() method.
• Creating custom exceptions
• What is super()
• String and String Buffer - Which one should we prefer?
• Adapter Class
• Vector, Hashtables, Lists, Enumerations in Java
• Serialization in Java and Marshelling
• What are the types of JDBC drivers? Which would you prefer?
• How do you establish connection to database using JDBC?
• Convert Oracle CLOB to Java String
• Convert Java String to Oracle CLOB
• Difference: createStatement, prepareStatement and prepareCall
• What is Transaction? How it is managed with JDBC
• How can we make call to a stored procedure from JDBC ?
• Dirty read and 2 phase commits
• How do we retrieve table META Data ?