电视练习

public class FormatTest {
/*public static int maxStringLength;

public static double minSize;*/

private static int maxStringLength;

private static double minSize;

public static int getMaxStringLength() {
return maxStringLength;
}

public static void setMaxStringLength(int maxStringLength) {
FormatTest.maxStringLength = maxStringLength;
}

public static double getMinSize() {
return minSize;
}

public static void setMinSize(double minSize) {
FormatTest.minSize = minSize;
}

public static boolean testStringLength( String a){
if(a.length()<=maxStringLength){
return true;
}else{
return false;
}
}

public static boolean testDouble(double b){
if(b>=minSize){
return true;
}else{
return false;
}
}
}

再创建一个类

public class TestProgram {

public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner s=new Scanner(System.in);
System.out.println("请输入一个字符串");
String a=s.next();
System.out.println("请输入一个数");
double b=s.nextDouble();

/*FormatTest ft = new FormatTest();
ft.maxStringLength=12;
ft.minSize=100;

System.out.println(ft.testStringLength(A));
System.out.println(ft.testDouble(b))*/

FormatTest.setMaxStringLength(12);
FormatTest.setMinSize(100.000);

System.out.println(FormatTest.testStringLength(a));
System.out.println(FormatTest.testDouble(b));
}

}

再创一个类

public class Television {
private int channel;
private int volume;

public int getChannel() {
return channel;
}

public void setChannel(int channel) {
if(channel>=2&&channel<=999){

this.channel = channel;
}else{
System.out.println("没有这个频道，请重新开始");
}

}

public int getVolume() {
return volume;
}

public void setVolume(int volume) {
if(volume>=0&&volume<=10){
this.volume = volume;
}else{
System.out.println("输入错误，请重新输入音量");
}

}

public Television(){

}

public Television(int channel,int volume ){
this.channel=channel;
this.volume=volume;
}
}

最后创一个类运行

public class WatchTelevision {

public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner s=new Scanner(System.in);
System.out.println("请输入频道");
int channel=s.nextInt();
System.out.println("请调节音量");
int volume=s.nextInt();

Television tv=new Television();
tv.setChannel(channel);
tv.setVolume(volume);


if(tv.getChannel()>=2&&tv.getChannel()<=999){

System.out.println("你正在收看"+tv.getChannel()+"频道");
System.out.println("当前正在播放:12345");
}else{
System.out.println("请输入正确频道");
}

if(tv.getVolume()>=0&&tv.getVolume()<=10){
System.out.println("当前音量为"+tv.getVolume());
}else{

System.out.println("没有此音量");
}

}

}

感觉还是有点不熟悉