import java.util.*;
interface fly{
void start();
void land();}class Airplane implements fly{
int meal;
int lunch;public void start(int a){
meal=a;}public void land(int b)
{lunch=b;}int getstart(){return meal;}
int getland(){return lunch;}
}
public class Ok{public static void main(String[] args){
Airplane c=new Airplane();
c.start(10);
c.land(20);
System.out.println("this is value:"+c.getstart());
System.out.println("this is value:"+c.getland());}}
请各位高手看看这个错误到底是错在哪里
interface fly{
void start();
void land();}class Airplane implements fly{
int meal;
int lunch;public void start(int a){
meal=a;}public void land(int b)
{lunch=b;}int getstart(){return meal;}
int getland(){return lunch;}
}
public class Ok{public static void main(String[] args){
Airplane c=new Airplane();
c.start(10);
c.land(20);
System.out.println("this is value:"+c.getstart());
System.out.println("this is value:"+c.getland());}}
请各位高手看看这个错误到底是错在哪里
解决方案 »
- 数据库中的数据有什么容器显示在界面中?
- 为什么用setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)而不用setDefaultCloseOperation(3)???
- 80个线程的问题,大侠们帮忙!!!!!!!!!!!!
- 求一个正则表达式
- java有没有必要被编译成exe文件
- 很菜的问题,请指教,谢谢!
- struts+hibernate,在Action怎样新建表?
- 小问题,大实现!请大G,大J进!谢谢`~
- 请问那里有m个数中取n个数的全排列算法(java语言)
- 如何用JAVA调用DLL动态连接库,立马结帐!!!
- javax.comm的字节触发中断问题
- 我的程序为什么编译时会出现这个问题?求助!!!!
void start(int a); void land(int a);
}class Airplane implements fly {
int meal; int lunch; public void start(int a) {
meal = a; } public void land(int b) {
lunch = b;
} int getstart() {
return meal;
} int getland() {
return lunch;
}
}public class Example { public static void main(String[] args) {
Airplane c = new Airplane();
c.start(10);
c.land(20);
System.out.println("this is value:" + c.getstart());
System.out.println("this is value:" + c.getland());
}}
你接口中的方法必须也是带参数的