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public使用

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package lianxii;

public class Person {

    public int age;

    public static class Te {

        public static void main(String[] args) {

            Person t = new Person();
            t.age = -3;

        }
    }
}

package lianxii;

public class Person {

    public int age;

    public class Te {

        public void main(String[] args) {

            Person t = new Person();
            t.age = -3;
            System.out.println(t.age);
        }
    }
}

package lianxii;

public class Person {

    public int age;

    class Te {

        public void main(String[] args) {

            Person t = new Person();
            t.age = -3;
            System.out.println(t.age);
        }
    }
}


package lianxii;

public class Person {

    public int age;
}

class Te {

    public static void main(String[] args) {

        Person t = new Person();
        t.age = -3;

    }
}

注:以上都是正确
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