接口回调技术

fightCommand.java

public interface fightCommand{
	public void battle(String mess);
}

class LeaderHeader{
	String battleContent;
	public void giveCommand(fightCommand com) {
		com.battle(battleContent);
	}
	public void setBattleContext(String s) {
		battleContent = s;
	}
}

class ShiZhang implements fightCommand{
	final int MAXSoildierNumber = 1000;
	int soldierNumber = 1;
	String name;
	ShiZhang(String s){
		name=s;
	}
	public void battle(String mess) {
		System.out.println(name+"接到作战命令："+mess);
		System.out.println(name+"指派"+soldierNumber+"人参与作战");
		System.out.println(name+"保证完成任务");
	}
	void setSoldierNumber(int m) {
		if(m>MAXSoildierNumber) {
			soldierNumber=MAXSoildierNumber;
		}
		else if(m<MAXSoildierNumber){
			soldierNumber=m;
		}
	}
}

class LvZhang implements fightCommand{
	final int MAXSoildierNumber=800;
	int soldierNumber=1;
	String name;
	LvZhang(String s){
		name=s;
	}
	public void battle(String mess) {
		System.out.println(name+"接到作战命令："+mess);
		System.out.println(name+"指派"+soldierNumber+"人参与作战");
		System.out.println(name+"保证完成任务");
	}
	void setSoldierNumber(int m) {
		if(m>MAXSoildierNumber) {
			soldierNumber=MAXSoildierNumber;
		}
		else if(m<MAXSoildierNumber){
			soldierNumber=m;
		}
	}
}

MainClass.java

public class MainClass{
	public static void main(String args[]) {
		LeaderHeader leader = new LeaderHeader();//创建leader司令
		ShiZhang oneshi = new ShiZhang("第一师");//创建第一师师长
		oneshi.setSoldierNumber(986);//一师派遣986个人
		leader.setBattleContext("进攻北城");//司令下令进攻北城
		leader.giveCommand(oneshi);
		LvZhang oneLv = new LvZhang("第一旅");
		oneLv.setSoldierNumber(567);
		leader.setBattleContext("在二号公路狙击敌人");
		leader.giveCommand(oneLv);
	}
}