All Classes

         StringBuffer.append("c"); // appends a
         single character
 

It is preferable to use StringBuffer.append('c'); // appends a single character Implementation of PMD RFE 1373863

example:

 StringBuffer buf = new StringBuffer();
 buf.append("Hello");
 buf.append(" ").append("World");
 

This would be more eloquently put as:

 StringBuffer buf = new StringBuffer();
 buf.append("Hello World");
 

The rule takes one parameter, threshold, which defines the lower limit of consecutive appends before a violation is created.

Runs the CPD utility via ant.

A generic rule that can be configured to "count" classes of certain type based on either their name (full name, prefix, suffixes anything can be matched with a regex), and/or their type.

Example of configurations:

 public void testFoo() {
     try {
         doSomething();
         fail("should have thrown an exception");
     } catch (Exception e) {
     }
 }
 

  @Test(expected = Exception.class)
 

A console renderer with optional color support under *nix systems.

 * file: ./src/gilot/Test.java
     src:  Test.java:12
     rule: AtLeastOneConstructor
     msg:  Each class should declare at least one constructor
     code: public class Test
 

 * file: ./src/gilot/log/format/LogInterpreter.java
     src:  LogInterpreter.java:317
     rule: AvoidDuplicateLiterals
     msg:  The same String literal appears 4 times in this file; the first occurrence is on line 317
     code: logger.error( "missing attribute 'app_arg' in rule '" + ((Element)element.getParent()).getAttributeValue( "name" ) + "'" );
 

     src:  LogInterpreter.java:317
     rule: AvoidDuplicateLiterals
     msg:  The same String literal appears 5 times in this file; the first occurrence is on line 317
     code: logger.error( "missing attribute 'app_arg' in rule '" + ((Element)element.getParent()).getAttributeValue( "name" ) + "'" );
 

 * warnings: 3
 

 

Colorization is turned on by supplying -Dpmd.color - any value other than '0' or 'false', enables color - including an empty value ('').

See JLS 6.3 for a description of scopes

A Renderer for running PMD via a TextPad 'tool'.

 StringBuffer sb = new StringBuffer("some string");
 if (sb.toString().equals("")) {
     // this is wrong
 }
 if (sb.length() == 0) {
     // this is right
 }
 

Note: the instances will be immutable