public interface Hi1 {
public void sayHi(String name);
}
public class HiImpl1 implements Hi1{
String name;
@Override
public void sayHi(String name) {
this.name=name;
System.out.println("hi - "+name);
}
------------------------分隔符------------------------------
public interface Hi 2{
public void sayHi();
}
public class HiImpl2 implements Hi2{
String name;
public HiImpl(String name) {
this.name=name;
}
public void sayHi() {
System.out.println("hi "+name);
}
}
```第一种是自己写的,第二种是书上的