Java如何编写通用实用程序以打印所有功能的当前执行功能名称？

Question

I'm new to Java. I want to print the function names for quite a few functions that I run. Here is my current code which I found very repetitive in every single function. Is there a way (such as annotations) to make the code more concise and reusable?

I want to create such a common utility for all classes, instead of a single class.

class SomeClass {
    void func1() {
        String methodName = new Exception().getStackTrace()[0].getMethodName();
        System.out.println(methodName);
        // execute func1
    }
    void func2() {
        String methodName = new Exception().getStackTrace()[0].getMethodName();
        System.out.println(methodName);
        // execute func2
    }
    void func3() {
        String methodName = new Exception().getStackTrace()[0].getMethodName();
        System.out.println(methodName);
        // execute func3
    }
}

I have tried to create another class to wrap the repetitive lines as below.

class FuncInfo {
    public void printFuncName() {
        String methodName = new Exception().getStackTrace()[0].getMethodName();
        System.out.println(methodName);
    }
}

class SomeClass {
    FuncInfo funcInfo = new FuncInfo();
    void func1() {
        funcInfo.printFuncName;
        // execute func1
    }
   // ...
}

However, it prints the common util class and function names ("printFuncName"), instead of the method names that I need ("func1", "func2" or "func3").

Answer 1

You can delegate this task to a commonly used function:

class SomeClass() {
    void fun() {
        String methodName = new Exception().getStackTrace()[1].getMethodName();
        System.out.println(methodName);
        // execute func1
    }
    void func1() {
        fun();
        // execute func1
    }
    void func2() {
        fun();
        // execute func2
    }
    void func3() {
        fun();
        // execute func3
    }
}