FindBugs: Difference between revisions
m (New page: [http://findbugs.sourceforge.net/ FindBugs] is an open source project which identifies potential problems with your code by doing byte code analysis. Here are some common problems, and ea...) |
mNo edit summary |
||
| Line 1: | Line 1: | ||
[http://findbugs.sourceforge.net/ FindBugs] is an open source project which identifies potential problems with your code by doing byte code analysis. Here are some common problems, and easy fixes: | [http://findbugs.sourceforge.net/ FindBugs] is an open source project which identifies potential problems with your code by doing byte code analysis. Here are some common problems, and easy fixes: | ||
=== Invocation of toString on an array === | |||
The code invokes toString on an array, which will generate a fairly useless result such as [C@16f0472. Consider using Arrays.toString to convert the array into a readable String that gives the contents of the array. See Programming Puzzlers, chapter 3, puzzle 12. | The code invokes toString on an array, which will generate a fairly useless result such as [C@16f0472. Consider using Arrays.toString to convert the array into a readable String that gives the contents of the array. See Programming Puzzlers, chapter 3, puzzle 12. | ||
Latest revision as of 23:17, 9 October 2007
FindBugs is an open source project which identifies potential problems with your code by doing byte code analysis. Here are some common problems, and easy fixes:
Invocation of toString on an array
The code invokes toString on an array, which will generate a fairly useless result such as [C@16f0472. Consider using Arrays.toString to convert the array into a readable String that gives the contents of the array. See Programming Puzzlers, chapter 3, puzzle 12.
<geshi lang="java5"> Object a[] = { "a", "b" }; System.out.println(a); </geshi>
The result is [Ljava.lang.Object;@12152e6. A better way to do this is:
<geshi lang="java5"> Object a[] = { "a", "b" }; System.out.println(Arrays.asList(a).toString()); </geshi>
which outputs [a, b].