How to use method in java

Today, I will talk to you about how to use method in java. Many people may not know much about it. In order to let everyone know more, Xiaobian summarized the following contents for everyone. I hope everyone can gain something according to this article.

1. Create demo class and write three test methods

public void printTest() { System.out.println("Test print method");}public void printTest1 (String param) { System.out.println("Test print method, with 1 argument: "+param);}public void printTest2 (String param, int type) { System.out.println("Test print method, with 2 parameters: "+param+"---"+type);}

2. Write reflective code

//Reflect to get the corresponding javaClass c1 = Class.forName("java class location");Object obj=c1.newInstance();

3. Call parameterless method

//Method = c1.getMethod(methodName);//Execute method.invoke(obj);

4. Call a method with parameters

Method = c1.getMethod(methodName, String.class);//Execute method.invoke(obj, params);

5. Calling multi-parameter methods

Class[] paramClass = new Class[]{String.class,int.class};Object[] objsParam = new Object[]{bean.getJobParam(),Integer.parseInt(bean.getJobParamTow())};Method method = c1.getMethod(methodName,paramClass);//Execute method.invoke(obj,objsParam); After reading the above, do you have any further understanding of how to use method in Java? If you still want to know more knowledge or related content, please pay attention to the industry information channel, thank you for your support.