java的接口格式

//接口声明
[public] interface interfaceName [extends listOfSuperInterface]{
……
}

//接口的方法定义
returnType methodName ( [paramlist] )；

//接口的完整示例
interface Collection {
void add (Object obj);
void delete (Object obj);
Object find (Object obj);
int size ( );
}

//接口的完整定义
[public] interface InterfaceName [extends superInterfaceList]{ //接口声明
type constantName = Value; //常量声明，可为多个
retumType methodName ( [paramList] ); //方法声明，可为多个
}