解决 Java FileNotFoundException

package cn.itcod.test.inflection;

import cn.itcod.test.collection.test.CloneablePojo;

import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.Method;

import java.util.Properties;

public class ClassName {

    public static void main(String[] args) throws Exception {
        Class<?> c = Class.forName(getValue("classpath"));
        System.out.println(c.getName());
        CloneablePojo cloneablePojo = (CloneablePojo) c.newInstance();
        Field field = c.getDeclaredField("info");
        Method method = c.getMethod("setNo", int.class, String.class);
        Method method1 = c.getDeclaredMethod("getNo");
        field.setAccessible(true);
        field.set(cloneablePojo, "'success' by field.set() set value");
        method.invoke(cloneablePojo, 1, "method.invoke()");
        System.out.println(field.get(cloneablePojo));
        System.out.println(method1.invoke(cloneablePojo));
    }
    public static String getValue(String key) throws IOException {
        Properties pro = new Properties();//获取配置文件的对象
        FileReader in = new FileReader("application.txt");//获取输入流
        pro.load(in);//将流加载到配置文件对象中
        in.close();
        return pro.getProperty(key);//返回根据key获取的value值
    }

}

File file = new File("application");
        if(!file.exists()){
            //先得到文件的上级目录，并创建上级目录，在创建文件
            try {
                //创建文件
                file.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }