Java New Features and Enhancements

• New features in Java 8
• Lambda Expressions
• Pipelines and Streams
• Date and Time API
• Default Methods
• Type Annotations
• Nashhorn JavaScript Engine
• Concurrent Accumulators
• Parallel operations
• PermGen Error Removed
• TLS SNI
• New features in Java 7
• Strings in switch Statement
• Type Inference for Generic Instance Creation
• Multiple Exception Handling
• Try with Resources
• Java nio Package
• Binary Literals
• Underscore in literals
• Fork Join Framework
• G1 Garbage Collector
• More Precise Rethrowing of Exception

• New features in Java 6
• Scripting Language Support
• JDBC 4.0 API
• Java Compiler API
• Pluggable Annotations
• Native PKI, Java GSS, Kerberos and LDAP support
• Integrated Web Services
• Lot more enhancements
• New features in Java 5
• Generics
• Enhanced for Loop
• Autoboxing/Unboxing
• Typesafe Enums
• Varargs
• Static Import
• Metadata (Annotations)
• Instrumentation
• New features in Java 4
• XML Processing
• Java Print Service
• Logging API
• Java Web Start
• JDBC 3.0 API
• Assertions
• Preferences API
• Chained Exception
• IPv6 Support
• Regular Expressions
• Image I/O API

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Paypal Java Interview Questions

1. What's the difference between class diagram and sequence diagram?
2. How many types of design patterns are available?
3. What's the use UML diagram?
4. How to create singleton design Pattern?
5. Which tool is used to create UML diagram?
6. What's Immutable object?
7. How to create custom Immutable class?
8. What's the difference between String and StringBuffer?
9. What's the difference between Factory and AbstractFactory?
10. What's the use of JUnit?
11. What are the annotations are available in JUnit testing?
12. What are the assert methods are available in Assert class in Junit?
13. What's difference b/w JUnit and TestNG?
14. What's the use of finally block?
15. Can we use try with finally block?
16. If we use System.exit in catch block finally will execute or not?
17. What's Serialization?
18. What's marker interface?
19. What's the use of marker interface?
20. What's the difference between wait and sleep?
21. What's the use of notify and notifyAll?
22. What's the difference between ArrayList and LinkedList?
23. What's the use of namespace?
24. Can we use the private Constructor?
25. What's Constructor overloading?
26. What's runtime polymorphism?
27. What's static binding and dynamic binding?
28. What's the use of transient keyword?
29. What are the steps to connect DB using JDBC?
30. What's the difference between statement and prepared statement?
31. What's your day to day activity?
32. Does Java support call by value or call by reference?

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Dell Java Interview Questions

1. What's Generics?
2. What's the use of Generics Frameworks?
3. What's the use of Generic Class and Methods?
4. What's Java collection?
5. What are the Advantage of Collection?
6. Explain Different types of collection?
7. Explain HashMap internal mechanism?
8. Explain Set internal mechanism?
9. Explain Equals and Hashcode internal mechanism?
10. How to store duplicate value in HashSet?
11. What is marker interface and use of the marker interface?
12. What's Object Serialization?
13. What's the use of serialVersionUid?
14. What is design pattern?
15. What are the different types of design patterns are available in Java?
16. How to create singleton design pattern?
17. How to use Generics in Factory design pattern?
18. How to use same singleton instance in different JVM?
19. What's the difference between Comparator and Comparable?
20. What's the difference between Association, Aggregation and Composition?
21. What's Object Cloning?

     

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