public、private、protected区别-访问权限
详见http://binuu.blog.51cto.com/801317/793733
说明:不写时默认为friendly
作用域 |
当前类 |
同一包(package) |
子孙类 |
其他包 |
public |
√ |
√ |
√ |
√ |
PRotected |
√ |
√ |
√ |
× |
friendly |
√ |
√ |
× |
× |
private |
√ |
× |
× |
× |