This rule is defined by the following XPath expression:
//CatchStatement[FormalParameter /VariableDeclaratorId/@Image = Block/BlockStatement/Statement /ThrowStatement/Expression/PrimaryExpression[count(PrimarySuffix)=0]/PrimaryPrefix/Name/@Image and count(Block/BlockStatement/Statement) =1]
Example:
public class Foo { void bar() { try { // do something } catch (SomeException se) { throw se; } } }