public java.lang.String toString ( ) { <BUG> java.lang.StringBuilder result = new java.lang.StringBuilder ( ) ;result . append ( STRING_1 ) . append ( VAR_1 ) . append ( STRING_2 ) . append ( VAR_2 ) ;return result . toString ( ) ;</BUG> }
public java.lang.String toString ( ) { return new java.lang.StringBuilder ( ) . append ( STRING_1 ) . append ( VAR_1 ) . append ( STRING_2 ) . append ( VAR_2 ) . toString ( ) ; } 
