子类Univer_Student继承父类Student，并调用父类的构造方法。
Class Student
{
int number; String name;
Student (int number,String name)
{this.number=number; this.name=name;
Systemout.println("I am"+name+"My number is"+number);}
}
class Univer_Student 1 Student
{
boolean婚否;
Univer_Student(int number,String name,boolean b)
{
2 (number,name);
婚否=b;
System.out.pritnln("婚否="+婚否);
}
}
public class test1_1
{
public static void main(String args[ ])
{
Univer_Student zhang=new Univer_Student(9901,"和小林",false);}
}