accountbalance.java

it is a good tool to help you study java

package Mypack;
class Balance{
String name;
double bal;
Balance(String n,double b){
name=n;
bal=b;
}
void show(){
if(bal<0)  System.out.print("-->");
System.out.println(name+":s"+bal);
}
}
class AccountBalance{
public static void main(String args[]){
Balance current[]=new Balance[3];
current[0]=new Balance("k.Yan",123.23);
current[1]=new Balance("W.TOM",-12.33);
current[2]=new Balance("C.Zhang",157.20);
for(int i=0;i<3;i++) current[i].show();
}
}