老是提示找不到符号，我看了好久，也没见到底哪里不对，编码也没有问题都用的utf-8

Question

public class MainClass
{
public static void main(String args[]){
TV haierTV = new TV();
haierTV.setChannel(5);
System.out.println("haiertv的频道是"+haierTV.getChannel());
Family zhangsanFamily=new Family();
zhangsanFamily.buyTV(haierTV);
System.out.println("zhangsanFamily开始看电视");
zhangsanFamily.seeTV();
int m=2;
System.out.println("zhangsanFamily将电视更换到“+m+”频道");
zhangsanFamily.remoteControl(m);
System.out.println("haierTV的频道是"+haierTV.getChannel());
System.out.println("zhangsanFamily再看电视节目");
zhangsanFamily.seeTV();
}
}

public class Family{
    TV homeTV;
void buyTV(TV tv){
    homeTV=tv;           //将参数tv赋值给hometv
}
void remoteControl(int m){
    homeTV.setChannel(m);
}
void seeTV(){
    homeTV.showProgram();  //hometv调用showprogram（）方法
}
}

public class TV{
int channel; //电视频道
void setChannel(int m) {
if (m>=1) {
channel=m;
}
}
int getChannel().{
return channel;
}
void showProgram(){
switch (channel) {
case 1 : System. out.println ("综合频道");
break;
case 2 : System. out . println ("经济频道");
break;
case 3 : System. out.println("文艺频道");
break;
case 4 : System.out.println ("国际频道");
break;
case 5 : System. out.print1n("体育频道");
break;
default : System. out.println ("不能收看"+channe1+"频道");
}
}
}

Answer 1

需要依次编译（javac）TV类所在文件，Family类所在文件，MainClass类所在文件