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Student s1 = new Student(101,\ÕÅÈý\ÄÐ\ Student s2 = new Student(102,\ÀîËÄ\Å®\ System.out.println(\µÚ1¸öѧÉúµÄÐÅϢΪ£º\ s1.showNo(); s1.showName(); s1.showSex(); s1.showAge();

System.out.println(\µÚ2¸öѧÉúµÄÐÅϢΪ£º\ s2.showNo(); s2.showName(); s2.showSex(); s2.showAge();

System.out.println(\Ð޸ĵÚ1¸öѧÉúµÄÄêÁ䣺\ s1.modifyAge(24);

System.out.println(\µÚ1¸öѧÉúµÄÄêÁäÐÞ¸ÄΪ£º\ s1.showAge(); } }

class Student{ private int s_No; private String s_Name; private String s_Sex; private int s_Age; Student(int no, String name, String sex, int age){ s_No = no; s_Name = name; s_Sex = sex; s_Age = age; } void showNo(){ System.out.println(\ѧºÅ£º\ } void showName(){ System.out.println(\ÐÕÃû£º\ } void showSex(){ System.out.println(\ÐÔ±ð£º\ } void showAge(){ System.out.println(\ÄêÁ䣺\ } void modifyAge(int newAge){ s_Age = newAge; }

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}

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public class X5_1_1 extends x{ private float f =10.6f; int i=16;

static int si=10;

public static void main(String[] args) { X5_1_1 x=new X5_1_1(); } }

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public class X5_1_2 extends x{ int ab(){

static int aa=10; aa++;

System.out.println(aa); }

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public class X5_3_5 {

public static void main(String[] args) {

Student s1=new Student(\ Student s2=new Student(\ s1.show(); s1.showID(); s2.show(); s2.showID(); }}

class Person{ String name; String sex; int age;

public Person(String n,String s,int a){ name = n; sex = s; age = a;} void show(){

System.out.println(\ System.out.println(\ System.out.println(\ }}

20