Class getMethods() method in Java with Examples

The getMethods() method of java.lang.Class class is used to get the methods of this class, which are the methods that are public and its members or the members of its member classes and interfaces. The method returns the methods of this class in the form of an array of Method objects.

Syntax:

public Method[] getMethods()

Parameter: This method does not accept any paramter.

Return Value: This method returns the methods of this class in the form of an array of Method objects.

Exception This method throws SecurityException if a security manager is present and the security conditions are not met.



Below programs demonstrate the getMethods() method.

Example 1:

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// Java program to demonstrate getMethods() method
  
import java.util.*;
  
public class Test {
    public static void main(String[] args)
        throws ClassNotFoundException
    {
  
        // returns the Class object for this class
        Class myClass = Class.forName("Test");
  
        System.out.println("Class represented by myClass: "
                           + myClass.toString());
  
        // Get the methods of myClass
        // using getMethods() method
        System.out.println("Methods of myClass: "
                           + Arrays.toString(
                                 myClass.getMethods()));
    }
}

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Output:

Class represented by myClass: class Test
Methods of myClass: [
public static void Test.main(java.lang.String[]) throws java.lang.ClassNotFoundException,
public final void java.lang.Object.wait(long, int) throws java.lang.InterruptedException,
public final native void java.lang.Object.wait(long) throws java.lang.InterruptedException,
public final void java.lang.Object.wait() throws java.lang.InterruptedException,
public boolean java.lang.Object.equals(java.lang.Object),
public java.lang.String java.lang.Object.toString(),
public native int java.lang.Object.hashCode(),
public final native java.lang.Class java.lang.Object.getClass(),
public final native void java.lang.Object.notify(),
public final native void java.lang.Object.notifyAll()
]

Example 2:

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// Java program to demonstrate getMethods() method
  
import java.util.*;
  
class Main {
  
    public Object obj;
    private void function() {}
  
    Main()
    {
  
        class Arr {
        };
  
        obj = new Arr();
    }
  
    public static void main(String[] args)
        throws ClassNotFoundException
    {
        Main t = new Main();
  
        // returns the Class object
        Class myClass = t.obj.getClass();
  
        // Get the methods of myClass
        // using getMethods() method
        System.out.println("Methods of myClass: "
                           + Arrays.toString(
                                 myClass.getMethods()));
    }
}

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Output:

Methods of myClass: [
public static void Test.main(java.lang.String[]) throws java.lang.ClassNotFoundException,
public final void java.lang.Object.wait(long, int) throws java.lang.InterruptedException,
public final native void java.lang.Object.wait(long) throws java.lang.InterruptedException,
public final void java.lang.Object.wait() throws java.lang.InterruptedException,
public boolean java.lang.Object.equals(java.lang.Object),
public java.lang.String java.lang.Object.toString(),
public native int java.lang.Object.hashCode(),
public final native java.lang.Class java.lang.Object.getClass(),
public final native void java.lang.Object.notify(),
public final native void java.lang.Object.notifyAll()
]

Reference: https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html#getMethods–

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