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Exclusion patterns can be specified at both global and project levels. Go to Configuration > General Settings > Switch Off Violations (or at project level: Configuration > Settings > Switch Off Violations) and set the 'add values to the following properties:

• File exclusion patterns (sonar.switchoffviolations.

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• A line can have the following formats:
  
  • A semi-colon separated string defining 3 parts: resource key pattern, rule key pattern and range of lines.
  • A semi-colon separated string defining 2 parts: a first regular expression and a second one, which will be used to determine blocks of code for which violations must be ignored
    
    • Note: if the first regular expression is found but not the second one, then the plugin considers that the end of the code block is the end of the file.
  • A single string defining a regular expression which will be used to determine files that should be ignored if they match this regular expression
• Comments start with #
• Blank lines are allowed

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• allfile) to switch off all the violations on files that contains a block of code that matches a given regular expression.
  
  • Example: switch off all the violations on files containing @javax\.annotation\.Generated
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• Multi-criteria exclusion patterns (sonar.switchoffviolations.multicriteria) to switch off violations on specific resources, rules and ranges of lines.
  
  • Examples: 
    
    • Switch off all the violations (Java projects: structure = packages) => *;*;*
    • Switch off all the violations (non-Java projects: structure = folders) => **/*;*;*

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• • • Exclude all the violations on the Java file com.foo.Bar

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• • •  => com.foo.Bar;*;*

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• • • Exclude all the violations on the Java package com.foo => com.foo.*;*;*

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• • • Exclude all the violations of a specific rule => *;checkstyle:com.puppycrawl.tools.checkstyle.checks.design.DesignForExtensionCheck;*

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• • • Exclude all the violations of a specific rule on a specific file => com.foo.Bar;checkstyle:com.puppycrawl.tools.checkstyle.checks.design.DesignForExtensionCheck;*

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• • • Exclude all the violations on specific lines 10, 25 and 90 => com.foo.Bar;*;[10,25,90]

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• • • Exclude all the violations on a range of lines => com.foo.Bar;*;[10-90]
    • Exclude all the violations on several ranges of lines => com.foo.Bar;*;[10-90,92,98,120-150]
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• Bloc exclusion patterns (sonar.switchoffviolations.block) to switch off violations on specific blocks of code. Note: if the first regular expression is found but not the second one, then the plugin considers that the end of the code block is the end of the file.
  
  • Example: exclude code blocks delimited by GEN-FIRST and GEN-LAST (like NetBeans auto-generated code):
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# Switch off all violations (Java projects: structure = packages)
*;*;*

# Exclude a specific rule
*;checkstyle:com.puppycrawl.tools.checkstyle.checks.design.DesignForExtensionCheck;*

# Exclude on many ranges of lines
com.foo.Bar;*;[10-90,92,98,120-150]
 
# Since 1.2: exclude code blocks delimited by GEN-FIRST and GEN-LAST (like NetBeans auto-generated code)
GEN-FIRST;GEN-LAST
 
# Since 1.2: exclude files containing "@javax.annotation.Generated"
@javax\.annotation\.Generated

Run a Sonar analysis on your project to take into account your configuration.

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