getSimpleName() getName() getCanonicalName 这三个Class方法总是分不清
代码如下
@Slf4j
public class ClassNameDemo {
class ClassInner {
}
static class ClassStaticInner{
}
public static void main(String[] args) {
final Class<ClassNameDemo> classNameDemoClass = ClassNameDemo.class;
final Class<ClassInner> classInnerClass = ClassInner.class;
final Class<ClassStaticInner> classStaticInnerClass = ClassStaticInner.class;
log.info("ClassNameDemo getSimpleName:{}",classNameDemoClass.getSimpleName());
log.info("ClassNameDemo getName:{}",classNameDemoClass.getName());
log.info("ClassNameDemo getCanonicalName:{}",classNameDemoClass.getCanonicalName());
log.info("----------------------------------------");
log.info("ClassInner getSimpleName:{}",classInnerClass.getSimpleName());
log.info("ClassInner getName:{}",classInnerClass.getName());
log.info("ClassInner getCanonicalName:{}",classInnerClass.getCanonicalName());
log.info("----------------------------------------");
log.info("ClassStaticInner getSimpleName:{}",classStaticInnerClass.getSimpleName());
log.info("ClassStaticInner getName:{}",classStaticInnerClass.getName());
log.info("ClassStaticInner getCanonicalName:{}",classStaticInnerClass.getCanonicalName());
}
}
输出结果
总结
- getSimpleName()获得的是简单的类名
- getName()和getCanonicalName()在普通的情况下结果一样，都是包名+类名
- getName()和getCanonicalName()在内部类的时候结果不一样，getName()是$,getCanonicalName()是.
