DangerException类
public class DangerException extends Exception {
final String message="超重";
public String warnMess(){
return message;
}
}
CargoBoat类
public class CargoBoat {
int realContent;
int maxContent;
public void setMaxContent(int c){
maxContent=c;
}
public void loading(int m) throws DangerException{
realContent+=m;
if(realContent>maxContent){
realContent-=m;
throw new DangerException();
}
System.out.println("目前装载了"+realContent+"吨货物");
}
}
Example7_7类
public class Example7_7 {
public static void main(String[] args) {
CargoBoat ship=new CargoBoat();
ship.setMaxContent(1000);
int m=600;
try{
ship.loading(m);
m=400;
ship.loading(m);
m=367;
ship.loading(m);
m=555;
ship.loading(m);
}
catch(DangerException e){
System.out.println(e.warnMess());
System.out.println("无法再装载的重量是"+m+"吨的集装箱");
}
finally{
System.out.printf("货船将正点起航");
}
}
}