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Java Forum / General / October 2007can some explain what "new Class[0]" does
In studying some legacy code I cam across: Method m=this.class.getMethod(mName,new class[0]) what does the class[0] do?!?!?!!?!?? and why do it vs. something else? > In studying some legacy code I cam across: > > Method m=this.class.getMethod(mName,new class[0]) > > what does the class[0] do?!?!?!!?!?? and why do it vs. something else? It tells getMethod to find a method with no arguments. Arne > In studying some legacy code I cam across: > > Method m=this.class.getMethod(mName,new class[0]) > > what does the class[0] do?!?!?!!?!?? and why do it vs. something else? check the api at http://java.sun.com/j2se/1.5.0/docs/api/ the getMethod method of the Class object explains it "Aryeh M. Friedman" wrote: >> In studying some legacy code I cam across: >> >> Method m=this.class.getMethod(mName,new class[0]) Are you sure it doesn't say, Method m=this.class.getMethod(mName,new Class[0]) ? BTW, "this.class" is not a very good idiom. Bear in mind that it sets a bit of a bad example by referring to a static member as if it were an instance variable.  SignatureLew On Sat, 13 Oct 2007 13:33:38 -0000, "Aryeh M. Friedman" <Aryeh.Friedman@gmail.com> wrote, quoted or indirectly quoted someone who said : >Method m=this.class.getMethod(mName,new class[0]) > >what does the class[0] do?!?!?!!?!?? and why do it vs. something else? This looks like some reflection code. I don't think you have quoted it correctly, or at least you have left out the context that would make it fully comprehensible. new class[0] Means create an dummy array of "class" objects (strange since classes must begin with a capital letter) with no elements. It's intent is to get you a method object you can dynamically choose at run time by name. see http://mindprod.com/jgloss/reflection.html If you are a newbie, I would ignore this code for now. Reflection is an advanced topic. SignatureRoedy Green Canadian Mind Products The Java Glossary http://mindprod.com Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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