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📜  Java 创建javap工具

📅  最后修改于: 2020-10-01 05:46:43             🧑  作者: Mango

创建一个用作javap工具的程序

可以使用以下java.lang.Class类的方法来显示类的元数据。

Method Description
public Field[] getDeclaredFields()throws SecurityException returns an array of Field objects reflecting all the fields declared by the class or interface represented by this Class object.
public Constructor[] getDeclaredConstructors()throws SecurityException returns an array of Constructor objects reflecting all the constructors declared by the class represented by this Class object.
public Method[] getDeclaredMethods()throws SecurityException returns an array of Method objects reflecting all the methods declared by the class or interface represented by this Class object.

创建Javap工具的示例

让我们创建一个类似于javap工具的程序。


import java.lang.reflect.*;

public class MyJavap{
   public static void main(String[] args)throws Exception {
Class c=Class.forName(args[0]);

System.out.println("Fields........");
Field f[]=c.getDeclaredFields();
for(int i=0;i

在运行时，您可以获取任何类的详细信息，它可以是用户定义的或预定义的类。

输出：