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Sanity4J was created to simplify running multiple static code analysis tools on the Java projects. It provides a single entry point to run all the selected tools and produce a consolidated report, which presents all findings in an easily accessible manner.

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UnsynchronizedStaticDateFormatter


UnsynchronizedStaticDateFormatter
SimpleDateFormat is not synchronized. Sun recomends separate format instances
for each thread. If multiple threads must access a static formatter, the
formatter must be synchronized either on method or block level.
      
		
		
		    
		    
    		    
    		    
    		    

    		    This rule is defined by the following Java class:
    		    net.sourceforge.pmd.rules.design.UnsynchronizedStaticDateFormatter
    		    
		    
	    
	    
        
        
        Example:
            
                    
    
public class Foo {
    private static final SimpleDateFormat sdf = new SimpleDateFormat();
    void bar() {
        sdf.format(); // bad
    }
    synchronized void foo() {
        sdf.format(); // good
    }
}