Class getMethod() method in Java with Examples - GeeksforGeeks

16 Dec, 2019
The getMethod() method of java.lang.Class class is used to get the specified method of this class with the specified parameter type, which is the method that is public and its members. The method returns the specified method of this class in the form of Method objects.
Syntax:
public Method getMethod(String methodName, 
                    Class[] parameterType) 
       throws NoSuchMethodException, SecurityException

Parameter: This method accepts two parameters:
methodName which is the Method to be get.
parameterType which is the array of parameter type for the specified method.
Return Value: This method returns the specified method of this class in the form of Method objects.
Exception This method throws:
NoSuchMethodException if a method with the specified name is not found.
NullPointerException if name is null
SecurityException if a security manager is present and the security conditions are not met.Below programs demonstrate the getMethod() method.Example 1:// Java program to demonstrate getMethod() method  import java.util.*;  public class Test {      public void func() {}      public static void main(String[] args)        throws ClassNotFoundException, NoSuchMethodException    {          // returns the Class object for this class        Class myClass = Class.forName("Test");          System.out.println("Class represented by myClass: "                           + myClass.toString());          String methodName = "func";        Class[] parameterType = null;          // Get the method of myClass        // using getMethod() method        System.out.println(            methodName + " Method of myClass: "            + myClass.getMethod(methodName, parameterType));    }}Output:Class represented by myClass: class Test
func Method of myClass: public void Test.func()
Example 2:// Java program to demonstrate getMethod() method  import java.util.*;  class Main {      public void func() {}      public static void main(String[] args)        throws ClassNotFoundException, NoSuchMethodException    {        // returns the Class object for this class        Class myClass = Class.forName("Main");          System.out.println("Class represented by myClass: "                           + myClass.toString());          String methodName = "func";        Class[] parameterType = null;          try {            // Get the method of myClass            // using getMethod() method            System.out.println(                methodName + " Method of myClass: "                + myClass.getMethod(methodName, parameterType));        }        catch (Exception e) {            System.out.println(e);        }    }}Output:Class represented by myClass: class Main
java.lang.NoSuchMethodException: Main.func()
Reference: https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html#getMethod-java.lang.String-java.lang.Class...-My Personal Notes
arrow_drop_upSave
Below programs demonstrate the getMethod() method.
Example 1:
// Java program to demonstrate getMethod() method  import java.util.*;  public class Test {      public void func() {}      public static void main(String[] args)        throws ClassNotFoundException, NoSuchMethodException    {          // returns the Class object for this class        Class myClass = Class.forName("Test");          System.out.println("Class represented by myClass: "                           + myClass.toString());          String methodName = "func";        Class[] parameterType = null;          // Get the method of myClass        // using getMethod() method        System.out.println(            methodName + " Method of myClass: "            + myClass.getMethod(methodName, parameterType));    }}
Class represented by myClass: class Test
func Method of myClass: public void Test.func()

Example 2:
// Java program to demonstrate getMethod() method  import java.util.*;  class Main {      public void func() {}      public static void main(String[] args)        throws ClassNotFoundException, NoSuchMethodException    {        // returns the Class object for this class        Class myClass = Class.forName("Main");          System.out.println("Class represented by myClass: "                           + myClass.toString());          String methodName = "func";        Class[] parameterType = null;          try {            // Get the method of myClass            // using getMethod() method            System.out.println(                methodName + " Method of myClass: "                + myClass.getMethod(methodName, parameterType));        }        catch (Exception e) {            System.out.println(e);        }    }}
Class represented by myClass: class Main
java.lang.NoSuchMethodException: Main.func()

Reference: https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html#getMethod-java.lang.String-java.lang.Class...-
Java-Functions
Java-lang package
Java.lang.Class
Java
Java
Writing code in comment?
Please use ide.geeksforgeeks.org,
generate link and share the link here.
Comments
Old Comments
Functional Interfaces in Java
Stream In Java
Constructors in Java
Different ways of Reading a text file in Java
Exceptions in Java
Generics in Java
Comparator Interface in Java with Examples
Strings in Java
Difference between Abstract Class and Interface in Java
How to remove an element from ArrayList in Java?