问题解决：java-反射-ClassNotFound报错解决

1.在文件夹跑java RunTest.java 是OK的，进入到eclipse里面，同样的代码，会报错ClassNotFound

public class RunTests
{
        public static void main(String[] args)
                throws Exception
        {
                // 处理MyTest类
                ProcessorTest.process("MyTest");
        }
}

package chapter14;

import java.lang.reflect.*;

public class TestProcessor
{
        public static void process(String clazz)
                throws ClassNotFoundException
        {
                int passed = 0;
                int failed = 0;
                // 遍历clazz对应的类里的所有方法
                for (Method m : Class.forName(clazz).getMethods())
                {
                        // 如果该方法使用了@Testable修饰
                        if (m.isAnnotationPresent(Testable.class))
                        {
                                try
                                {
                                        // 调用m方法
                                        m.invoke(null);
                                        // 测试成功，passed计数器加1
                                        passed++;
                                }
                                catch (Exception ex)
                                {
                                        System.out.println("方法" + m + "运行失败，异常："
                                                + ex.getCause());
                                        // 测试出现异常，failed计数器加1
                                        failed++;
                                }
                        }
                }
                // 统计测试结果
                System.out.println("共运行了:" + (passed + failed)
                        + "个方法，其中：\n" + "失败了:" + failed + "个，\n"
                        + "成功了:" + passed + "个！");
        }
}
package chapter14;

public class MyTest {
        @Testable
        public static void m1(){}
        public static void m2(){}
        @Testable
        public static void m3(){
                throw new RuntimeException("Boom");
        }
        public static void m4(){}
        @Testable
        public static void m5(){}
        public static void m6(){}
        @Testable
        public static void m7(){
                throw new RuntimeException("Crash");
        }
        public static void m8(){}
}
package chapter14;

import java.lang.annotation.*;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface Testable {
        
        
}

　　说我的MyTest不存在。搜了一下，是package的问题，className没有写全。

要在className前面加上packge：

package chapter14;

public class RunTests {
        public static void main(String[]args)
        throws Exception
        {
                TestProcessor.process("chapter14.MyTest");
        }
}

参考：

https://ask.csdn.net/questions/203230