Can I get all methods of a class?

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Suppose that I have a .class file, can I get all the methods included in that class ?

To know about all methods use this statement in console:

javap java.packagename.classname

Example: javap java.lang.StringBuffer

Can I get all methods of a class?, To know about all methods use this statement in console: javap -cp jar-file.jar packagename.classname. or. javap class-file.class  Getting the Methods of a Class Object: By obtaining a list of all declared methods 23. Getting the Methods of a Class Object: By obtaining a list of all public methods, both declared and inherited.

Straight from the source: http://java.sun.com/developer/technicalArticles/ALT/Reflection/ Then I modified it to be self contained, not requiring anything from the command line. ;-)

import java.lang.reflect.*;

/** 
Compile with this:
C:\Documents and Settings\glow\My Documents\j>javac DumpMethods.java

Run like this, and results follow
C:\Documents and Settings\glow\My Documents\j>java DumpMethods
public void DumpMethods.foo()
public int DumpMethods.bar()
public java.lang.String DumpMethods.baz()
public static void DumpMethods.main(java.lang.String[])
*/

public class DumpMethods {

    public void foo() { }

    public int bar() { return 12; }

    public String baz() { return ""; }

    public static void main(String args[]) {
        try {
            Class thisClass = DumpMethods.class;
            Method[] methods = thisClass.getDeclaredMethods();

            for (int i = 0; i < methods.length; i++) {
                System.out.println(methods[i].toString());
            }
        } catch (Throwable e) {
            System.err.println(e);
        }
    }
}

get_class_methods - Manual, Returns an array of method names defined for the class specified by class_name . If you want to get all methods/functions from a class you can do this with the  Class Methods. Methods are functions that belongs to the class. There are two ways to define functions that belongs to a class: In the following example, we define a function inside the class, and we name it "myMethod". Note: You access methods just like you access attributes; by creating an object of the class and by using the dot syntax (.):

public static Method[] getAccessibleMethods(Class clazz) {
    List<Method> result = new ArrayList<Method>();
    while (clazz != null) {
        for (Method method : clazz.getDeclaredMethods()) {
            int modifiers = method.getModifiers();
            if (Modifier.isPublic(modifiers) || Modifier.isProtected(modifiers)) {
                result.add(method);
            }
        }
        clazz = clazz.getSuperclass();
    }
    return result.toArray(new Method[result.size()]);
}

Print/list all methods/functions of class in java (example), We will use getDeclaredMethods() of Class to retrieve all methods. Method Name​, Description. Method[] getDeclaredMethods(), Returns an array  Visual Studio 2012: List of all Methods in class. In VS 2010, is there a way to see all the Methods in a docked window for the currently viewed class. Clicking the method would let me navigate to it. This question is for design mode, while editing a class in the IDE.

You can use the Reflection API

How do I get the methods of a class object?, Method; public class GetMethods { public static void main(String[] args) getClass(); // Get all declared methods including public, protected,  now you just need to write your test class with tegst methods prefixed by 'test', and then just instantiate object of that test class of your, all those tests methods will get run automatically The drawback is: your test methods must not accept any arguments

package tPoint;

import java.io.File;
import java.lang.reflect.Method;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;

public class ReadClasses {

public static void main(String[] args) {

    try {
        Class c = Class.forName("tPoint" + ".Sample");
        Object obj = c.newInstance();
        Document doc = 
        DocumentBuilderFactory.newInstance().newDocumentBuilder()
                .parse(new File("src/datasource.xml"));

        Method[] m = c.getDeclaredMethods();

        for (Method e : m) {
            String mName = e.getName();
            if (mName.startsWith("set")) {
                System.out.println(mName);
                e.invoke(obj, new 
          String(doc.getElementsByTagName(mName).item(0).getTextContent()));
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

}

28.13. inspect — Inspect live objects, For example, it can help you examine the contents of a class, retrieve the source code of a method, extract and format the argument list for a function, or get all  When overridden in a derived class, searches for the methods defined for the current Type, using the specified binding constraints. GetMethods() Returns all the public methods of the current Type.

View class methods - MATLAB methodsview, Display Methods of Java Class. List information on all methods in the java.awt.​MenuItem class. MATLAB displays this information  Had a class where all methods performed variations of the same process - which led to lengthy tests, each only a tweak away from the others. DRY was a far away dream. Thought I should have a single test for all methods, so I made the above iteration.

List functions of object class - MATLAB methods, This MATLAB function returns the names of all methods for the class of which obj is an instance. How can I get all the public methods of class using reflection when class name is passed as a string as shown in the below method. ? private MethodInfo[] GetObjectMethods(string selectedObjClas

Discovering Class Members (The Java™ Tutorials > The Reflection , The following tables provide a summary of all the member-locating methods and their characteristics. Class Methods for Locating Fields. Class API, List of members? Inherited This example could be modified to use java.lang.reflect.​Field. Get all the method names in all of the classes. I'm trying to get all the method names in all of the classes in a vb.net project through a c# forms application. I've come this far: Now here is the problem, (since I'm doing something wrong) it doesn't allow me to use a type in the call of BindMethodNames<>() as for "classItem".

Comments
  • So, I replace 'Class' with myClass name?
  • You would use it from the command line java DumpMethods com.mypackage.MyClass
  • You also could replace args[0] with "com.mypackage.MyClass". If it's using the default package, you can just use "MyClass".
  • @Eng I edited it to be entirely self-contained. As you see, the class DumpMethods has 4 methods (foo, bar, baz, and main) and these are all represented in the output. For some fun, replace "DumpMethods" with "java.util.List". :-)
  • What about inherited methods? See here in case it's a requirement: stackoverflow.com/a/31204747/363573
  • Using above code you can read all the methods in the class and pass the parameter as string