Java面向对象经典案例10个

}

class ShowBox{

void show(Box b){

System.out.println(b.length+\ \ } }

class TestTwo{

public static void main(String args[]){

Box a = new Box(); a.set(3,4,5);

ShowBox sbox = new ShowBox(); sbox.show(a); } }

6.

class One{ int a = 5;

void showB(){

int a = 3;

int b = this.a;

System.out.println(\ } }

public class ThisOne{

public static void main(String args[]){

One test = new One(); test.showB(); } }

7.

class Mystatic{ private int x=3;

public static void showx(){ System.out.println(\ }

public static int add(int m){ return m+x; } }

class UseMystatic{

public static void main(String args[]){ Mystatic.showx();

System.out.println(\ } }

8.

class Point { int x; int y;

Point(){ x=0; y=0;

//this(1,1); }

Point(int a,int b){ x=a; y=b; }

void show(){

System.out.println(\ y=\ } }

public class UsePoint

{

public static void main(String args[]){ Point p = new Point(); p.show(); } }

9.

class Point{ private int x,y;

Point(){ x=1; y=3; }

void showPoint(Point t){ }

public class UsePointThis { }

public static void main(String args[]){ Point p=new Point(); }

p.seeit();

System.out.println(\ y=\ } void seeit(){ showPoint(this); }

10

class Point{

static int x=2; int y=0; }

public class UseStatic{

public static void main(String args[]){

System.out.println(\利用类调用静态变量\ System.out.println(\

//System.out.println(\ Point p1=new Point();

System.out.println(\利用对象调用\ System.out.println(\ System.out.println(\

Point p2=new Point();

p2.y=3;

System.out.println(\对象p1中y的值\ System.out.println(\对象p2中y的值\ p1.x=6;

System.out.println(\对象p1中x的值\ System.out.println(\对象p2中x的值\ } }