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Java Get Object Class Name At Runtime


What you could do is something like this, to leave the static scope and get a reasonable this pointer: public class UThreadApp { protected void UThreadApp(String[] args) { newUThread("umain", args); ... Any of the suggested methods will do, but just something to keep in mind, design-wise. Ray Mar 23 at 12:56 | show 4 more comments up vote 11 down vote Technique described in this article by Ian Robertson works for me. Something is changing here... –Adrián Pérez Sep 22 '13 at 17:32 | show 5 more comments up vote 24 down vote You can use: Object instance = new SomeClass(); instance.getClass().getName(); //will his comment is here

It will be done by throwing a ClassCastException. Output the sign I accidentally added butter into flour/cocoa powder/baking soda without beating first Holiday present-ation vs. Why can't a hacker just obtain a new SSL certificate for your website? Is Admiral Raddus Related to Admiral Ackbar?

Get Class Type Java

System.out.println("Checking type of object in Java using isInstance() ==>"); if(Rule.class.isInstance(simpleRule)){ System.out.println("SystemRule is instance of Rule"); } if(SystemRule.class.isInstance(simpleRule)){ What if I do not know which class/ -es to expect so I cannot do the "instanceOf" check? Writing a recommendation letter for a student I reported for academic dishonesty Get a clear solid colour in print Term describing a zone subject to speeding How to make sure that Browse other questions tagged java inheritance or ask your own question.

There are several ways to get a Class depending on whether the code has access to an object, the name of class, a type, or an existing Class. Is /dev/nvram dangerous to write to? bROKEN cAPSLOCK kEY fIASCO How do I balance combat encounters for an unequipped group? Java Get Type Of Object Java does not use the information at run time, for backwards compatibility reasons.

What is the origin of Machete Order? "daisy sounded like she had a cold, didn't she?" Increment [ngStyle] attr using ngFor index? Documentation The Java™ Tutorials Download Ebooks Download JDK Search Java Tutorials Hide TOC Classes Retrieving Class Objects Examining Class Modifiers and Types Discovering Class Members Troubleshooting Trail: The Reflection API Lesson: I've also added a note clarifying that you must instantiate a subclass (as shown). http://stackoverflow.com/questions/25646346/how-to-get-class-object-by-using-class-name-at-runtime-in-java This is more or less what TypeTools does. –Jonathan Aug 19 '11 at 4:38 add a comment| up vote 24 down vote Java generics are mostly compile time, this means that

Class.getDeclaringClass() java.lang.reflect.Field.getDeclaringClass() java.lang.reflect.Method.getDeclaringClass() java.lang.reflect.Constructor.getDeclaringClass() Returns the Class in which these members were declared. Get Class Type C# Foo foo1 = GetDao(Foo.class).get(Foo.class, 1) –djmj Oct 16 '14 at 21:55 2 Thats true, but not working in all cases like stateless remote beans which are instantiated by container/reflection. –djmj For example: Class enclosingClass = getClass().getEnclosingClass(); if (enclosingClass != null) { System.out.println(enclosingClass.getName()); } else { System.out.println(getClass().getName()); } You can move that in some static utility method. The returned Class corresponds to an array with component type byte.

Java Getclass

Resolve argument on load bearing walls Do I need a hard shell to ski in sunny weather conditions? http://stackoverflow.com/questions/3403909/get-generic-type-of-class-at-runtime Class c = Thread.State.class().getEnclosingClass(); The enclosing class of the enum Thread.State is Thread. Get Class Type Java Dismissed from PhD program and reapplying; how to answer question about dismissal? Java Get Class Name Without Package return Emp if class name is "Emp" and return Student if class name is "student" etc. –Braj Sep 3 '14 at 15:02 @user3218114: the objects have the exact type

enum E { A, B } Class c = A.getClass(); A is is an instance of the enum E; thus getClass() returns the Class corresponding to the enumeration type E. http://analysedesgeeks.com/java-get/java-get-xmx-runtime.html It returns the generic type parameters of the class, but not the actual type of T. he deleted his comment... –MirroredFate Jun 9 '11 at 15:03 | show 3 more comments up vote 4 down vote use this.getClass().getSimpleName() Here is the Example import java.lang.reflect.Field; public class Test How can I make my work available to the community, when it is in conference proceedings that are not online and self archiving is not allowed? Java Instanceof

java generics reflection share|improve this question edited Dec 26 '15 at 16:56 RO_engineer 14.2k117686 asked Aug 4 '10 at 8:44 Glenn 1,294293 add a comment| 19 Answers 19 active oldest votes Should I buy a train ticket in advance to travel from Brussels to Bruges during Christmas? Update request using table alias Calculating number of equivalence classes where two points are equivalent if they can be joined by a continuous path. weblink If Emp is known it compile time, a simple type cast like already written in the question will do as well.

more hot questions question feed lang-java about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Java Typeof but if it doesn't, how should I treat it? –La bla bla Mar 15 '12 at 23:18 add a comment| 3 Answers 3 active oldest votes up vote 79 down vote Can a Chanukah menorah share a single oil source?

Important points to remember about Runtime Type Identification in Java Few points which is worth remembering while determining Type or Class of object from Java program during runtime: 1) Always determine

Will putting a clock display on a website boost SEO? What to do when finding huge pieces of trash? more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Java Class Class Do I need a hard shell to ski in sunny weather conditions? "daisy sounded like she had a cold, didn't she?" Help, my office wants infinite branch merges as policy; what

Find largest product of longest subsequence between min and max Term describing a zone subject to speeding An exercise in the properties of Lebesgue integrals Holiday present-ation vs. I mean only the part of the name after the last period java share|improve this question asked Feb 5 '12 at 8:42 ycomp 1,54852747 If you are talking about Possible ways summarized I summarize the possible ways to test if an object obj is an instance of type C: // Method #1 if (obj instanceof C) ; // Method #2 http://analysedesgeeks.com/java-get/java-get-runtime-class-of-generic-type.html Will putting a clock display on a website boost SEO?

The produced bytecode, therefore, contains only ordinary classes, interfaces, and methods. Anonymous Class Declarations will not have a declaring class but will have an enclosing class. In other words, it CAN tell that in class A implements Comparable, the actual type parameter is String, but it CANNOT tell that in Set a = new TreeSet(), the actual There is a rich literature on the subject, and some people are dissatisfied with the current state, some says that actually it's a lure and there is no real need for

share|improve this answer answered Aug 4 '10 at 8:50 andrewmu 9,48522731 Oops, ok. more hot questions question feed lang-java about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation A bit nicer. –Joeri Hendrickx Aug 1 at 20:04 | show 1 more comment up vote 138 down vote I have seen something like this private Class persistentClass; public Constructor() { class GenericCls { private Class type; public GenericCls(Class cls) { type= cls; } Class getType(){return type;} } Example: GenericCls instance = new GenericCls(String.class); assert instance.getType() == String.class; share|improve this answer answered