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[SOLVED] What is a NullPointerException, and how do I fix it?

23 Answered Questions

[SOLVED] How do I compare strings in Java?

  • 2009-02-04 23:17:07
  • Nathan H
  • 3213913 View
  • 727 Score
  • 23 Answer
  • Tags:   java string equality

78 Answered Questions

[SOLVED] Is Java "pass-by-reference" or "pass-by-value"?

49 Answered Questions

[SOLVED] How do I fix android.os.NetworkOnMainThreadException?

9 Answered Questions

[SOLVED] The Use of Multiple JFrames: Good or Bad Practice?

18 Answered Questions

[SOLVED] Unfortunately MyApp has stopped. How can I solve this?

  • 2014-04-28 23:55:14
  • nhaarman
  • 319277 View
  • 625 Score
  • 18 Answer
  • Tags:   java android

19 Answered Questions

15 Answered Questions

[SOLVED] Scanner is skipping nextLine() after using next() or nextFoo()?

11 Answered Questions

[SOLVED] How to add JTable in JPanel with null layout?

29 Answered Questions

[SOLVED] How to avoid Java code in JSP files?

  • 2010-07-05 07:24:06
  • former
  • 250556 View
  • 1526 Score
  • 29 Answer
  • Tags:   java jsp scriptlet

8 Answered Questions

11 Answered Questions

[SOLVED] How do I write a correct micro-benchmark in Java?

14 Answered Questions

[SOLVED] What is a raw type and why shouldn't we use it?

  • 2010-05-05 02:48:53
  • polygenelubricants
  • 171251 View
  • 525 Score
  • 14 Answer
  • Tags:   java generics raw-types

6 Answered Questions

[SOLVED] Providing white space in a Swing GUI

29 Answered Questions

[SOLVED] How to parse JSON in Java

  • 2010-04-07 09:00:21
  • Muhammad Maqsoodur Rehman
  • 1190003 View
  • 772 Score
  • 29 Answer
  • Tags:   java json parsing

9 Answered Questions

[SOLVED] What does a "Cannot find symbol" compilation error mean?

12 Answered Questions

[SOLVED] How to upload files to server using JSP/Servlet?

30 Answered Questions

[SOLVED] What's the simplest way to print a Java array?

  • 2009-01-03 20:39:39
  • Alex Spurling
  • 1711862 View
  • 1536 Score
  • 30 Answer
  • Tags:   java arrays printing

7 Answered Questions

[SOLVED] What is a stack trace, and how can I use it to debug my application errors?

16 Answered Questions

9 Answered Questions

[SOLVED] How do I print my Java object without getting "[email protected]"?

11 Answered Questions

[SOLVED] What issues should be considered when overriding equals and hashCode in Java?

7 Answered Questions

[SOLVED] How to use Servlets and Ajax?

  • 2010-11-06 10:12:13
  • Amir Rachum
  • 276796 View
  • 291 Score
  • 7 Answer
  • Tags:   java ajax jsp servlets

60 Answered Questions

[SOLVED] How do I generate random integers within a specific range in Java?

  • 2008-12-12 18:20:57
  • user42155
  • 3489363 View
  • 2912 Score
  • 60 Answer
  • Tags:   java random integer

12 Answered Questions

[SOLVED] Why is my Spring @Autowired field null?

11 Answered Questions

43 Answered Questions

31 Answered Questions

[SOLVED] How to split a string in Java

  • 2010-08-14 03:01:53
  • riyana
  • 3093514 View
  • 1282 Score
  • 31 Answer
  • Tags:   java string

21 Answered Questions

29 Answered Questions

[SOLVED] How to round a number to n decimal places in Java