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info AvoidDuplicateLiterals (PMD)

Code containing duplicate String literals can usually be improved by declaring the String as a constant field.

public class Foo {
 private void bar() {
    buz("Howdy");
    buz("Howdy");
    buz("Howdy");
    buz("Howdy");
 }
 private void buz(String x) {}
}

    

Additional info can be found at this http://pmd.sourceforge.net/rules/strings.html#AvoidDuplicateLiterals site.