接口3

1 public interface CentralPartyCommittee {
2     void partyLeader();
3 
4 }

1 public class StateCouncil {
2 
3     void safetyInProduction() {
4         System.out.println("安全生产");
5     }
6 }

 1 public class Province extends StateCouncil implements CentralPartyCommittee {
 2 
 3     @Override
 4     public void partyLeader() {
 5         System.out.println("我们各省人民一定坚持党的领导");
 6     }
 7 
 8     void safetyInProduction() {
 9         System.out.println("我们各省人民一定按照国务院的指示进行安全生产！");
10     }
11 }

1     public static void main(String[] args) {
2         
3         Province a= new Province();
4         a.partyLeader();
5         a.safetyInProduction();
6 
7     }