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class Person {
public Person() {
this.print();
}
public void print(){}
}
class Student extends Person {
int x=20;
public Student(int x) {
//成员变量分配空间并初始化为默认值:x=0;
//执行Super();
//Super()执行完之后初始化x=20;
this.x = x;
}
public void print(){
System.out.println(Student.class);
System.out.println("x="+x);
}
}
public class Test1 {
public static void main(String[] args) {
Person p = new Student(200);
}
}
class Person {
public Person() {
this.print();
}
public void print(){}
}
class Student extends Person {
int x=20;
public Student(int x) {
//成员变量分配空间并初始化为默认值:x=0;
//执行Super();
//Super()执行完之后初始化x=20;
this.x = x;
}
public void print(){
System.out.println(Student.class);
System.out.println("x="+x);
}
}
public class Test1 {
public static void main(String[] args) {
Person p = new Student(200);
}
}