BE THE CODER > Tools and Libs > Commons Lang3 Examples > Classes

Apache Commons Lang 3.0 is a java library with lot of utilities and reusable components. This requires the library commons-lang3-3.0.1.jar to be in classpath. The following example shows using ClassUtils.getPublicMethod() API. It returns the public Method like Class.getMethod, however it ensures that the returned Method is from a public class or interface and not from an anonymous inner class.

File Name :

com/bethecoder/tutorials/commons_lang/common/Student.java


package com.bethecoder.tutorials.commons_lang.common;



public class Student extends Person {



  private static String DEFAULT_NAME = "Unknown";

  private String name;

  private int age;

  private String hobby;



  public Student() {

  }



  public Student(String name, int age, String hobby) {

    super();

    this.name = name;

    this.age = age;

    this.hobby = hobby;

  }



  public String getName() {

    return name;

  }

  public void setName(String name) {

    this.name = name;

  }

  public int getAge() {

    return age;

  }

  public void setAge(int age) {

    this.age = age;

  }

  public String getHobby() {

    return hobby;

  }

  public void setHobby(String hobby) {

    this.hobby = hobby;

  }

  

  public String toString() {

    return "Student[name = " + name + ", age = " + age + ", hobby = " + hobby + "]";

  }

}

File Name :	com/bethecoder/tutorials/commons_lang/tests/classes/GetMethodTest.java
Author :	Sudhakar KV
Email :	[email protected]


package com.bethecoder.tutorials.commons_lang.tests.classes;



import java.lang.reflect.InvocationTargetException;

import java.lang.reflect.Method;



import org.apache.commons.lang3.ClassUtils;



import com.bethecoder.tutorials.commons_lang.common.Student;



public class GetMethodTest {



  /**

   * @param args

   * @throws NoSuchMethodException 

   * @throws SecurityException 

   * @throws InvocationTargetException 

   * @throws IllegalAccessException 

   * @throws IllegalArgumentException 

   */

  public static void main(String[] args) throws SecurityException, 

          NoSuchMethodException, IllegalArgumentException, 

          IllegalAccessException, InvocationTargetException {

  

    Student std = new Student("Sriram", 2, "Chess");

    Method meth = ClassUtils.getPublicMethod(std.getClass(), 

        "getName", new Class<?> [] {});

    String name = (String) meth.invoke(std, new Object [] {});

    System.out.println("Name : " + name);

  }

}

Get Method