Core Java Topics

Core Java

1. Coding Tips
2. How to merge two arrays
3. How to get IP address and MAC address of system
4. How to handle NumberFormatException
5. Externalizable interface example for Serialization and Deserialization
6. Immutability example using final class
7. How to send Email in Specific time interval continously Using Timer threads
8. Important Concepts of Aggregation, Association and Composition
9. Understanding Strong, Soft, Weak and Phantom References
10. Example for how to create a User Defined Exception and how can we use that
11. How to override equals and hashCode method in Java
12. Singleton Design Pattern V/S Static Classes
13. Volatile V/S synchronized and Use of volatile variable
14. Increasing Heap Size
15. What is Introspection?
16. Generalization, Specialization, Realization and Dependency
17. How to Use Java built-in Logger
18. What is Cloning?
19. How to create a XML file dynamically using Java
20. What is Memory Leak in Java?
21. How to append data in a existing File using Java?
22. Inner classes in Java
23. What are the different ways to implement Anonymous inner class?
24. How do I extend an abstract inner class?
25. How to get reference of Outer class members inside inner class?
26. Producer-Consumer problem in Java
27. How to convert a string into a List, String Array into a List or Char Array into a List?
28. StAX(Streaming API for XML)
29. Palindrome(Palingram) and Anagram Java Programs
30. Java ClassLoader
31. JCS implementation in JAVA
32. How to extract data from CSV file in java and insert data in database table?
33. About Callable, FutureTask and ExecutorService and their Implementation
34. Caching Implementation Using Core Java
35. What is Password Encryption and Decryption?
36. How to encrypt and decrypt password using AES algorithm?
37. What is MD-5 and SHA algorithm?
38. What is RSA algorithm and how to use RSA for encryption and decryption using java?
39. How to create a property file using Java program in Plain Text and XML format?
40. How to read the PLAIN property file and XML property file in java?
41. How to load and read the Property file from classpath in java?
42. How to save an Image and read back from database in Java?
43. How to save java objects into database in java?
44. Performance Monitoring of String, StringBuffer and StringBuilder
45. What is UUID(Universally Unique Identifiers)?
46. About Atomic Operation in Java
47. How ConcurrentHashMap works internally in Java?
48. Semaphore In Multithreading
49. What is XPath?
50. How can we use XPath in Java PART-2?
51. How to access private variable outside using reflection
52. Serialization Example(Read and Write)
53. Comparing and Sorting list objects based on their multiple attributes
54. How to Compare two Arraylists which contain objects of the same class?
55. Java Memory Management
56. Core Java Basic Programs
57. TreeMap Example with User Defined Object as Key
58. TreeSet Example Using Comparator
59. Covariant and Contravariant
60. WeakHashMap and IdentityHashMap
61. String Manipulation Utilities
62. Adding User Defined Object in TreeSet
63. Java Stream API Example
64. Sequential Stream and Parallel Stream in Java
65. About Memory Dumps and Commands