class data { private int yue;
private int day;
public static int num = 0; public int Get_yue(int m) {
yue = m;
return yue;
} public int Get_day(int n) {
day = n;
return day;
} public void Set() {
while (yue > 0 && yue <= 12) {
for (int i = 1; i <= yue; i++) {
switch (i) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
num = num + 31;
break;
case 2:
num = num + 29;
break;
case 4:
case 6:
case 9:
case 11:
num = num + 30;
break;
}
}
}
} public void print() {
int DATA;
DATA = num + day;
System.out.println("2007年" + yue + "月"
+ day + "日是这一当中的" + DATA + "天");
}
} public class D_data { public static void main(String[] args) {
int x=3,y=4;
//System.out.println("请输入日期:x y");
// x=(int)System.in.read();
// x=(int)System.in.read();
data D = new data();
D.Get_yue(x);
D.Get_day(y);
D.Set();
D.print();
}
}程序没有报错,但是没有结果!各位帮我 看下啊 !还有如果我 想用键盘输入,应添加什么 代码?
private int day;
public static int num = 0; public int Get_yue(int m) {
yue = m;
return yue;
} public int Get_day(int n) {
day = n;
return day;
} public void Set() {
while (yue > 0 && yue <= 12) {
for (int i = 1; i <= yue; i++) {
switch (i) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
num = num + 31;
break;
case 2:
num = num + 29;
break;
case 4:
case 6:
case 9:
case 11:
num = num + 30;
break;
}
}
}
} public void print() {
int DATA;
DATA = num + day;
System.out.println("2007年" + yue + "月"
+ day + "日是这一当中的" + DATA + "天");
}
} public class D_data { public static void main(String[] args) {
int x=3,y=4;
//System.out.println("请输入日期:x y");
// x=(int)System.in.read();
// x=(int)System.in.read();
data D = new data();
D.Get_yue(x);
D.Get_day(y);
D.Set();
D.print();
}
}程序没有报错,但是没有结果!各位帮我 看下啊 !还有如果我 想用键盘输入,应添加什么 代码?
这个死循环了,yue永远不改变,永远跳不出循环,当然也没法运行到D.print()这句了
import java.io.*;public class IO
{
public static void main(String[] args)
{
int input;
String str;
Scanner s = new Scanner(System.in);
input = s.nextInt();//读取一个数字
str = s.next();//读取字符串
System.out.println(input);//输出数字
System.out.println(str);//输出字符串
}
}
用键盘输入
sc.next();
其实有Calendar的,介个很强大
//獲得鍵盤輸入需要導入 包
class Hello {
public int jisuan(int month)
{
int all=0;
for (int i = 1; i <= month; i++) {
if (month==1||month==3||month==5||month==7||month==8||month==10||month==12) {
all=all+31;
}
else if (month==2) {
all=all+28;
}else {
all=all+30;
}
}
return all;
}}public class Help { public static void main(String[] args) {
//問題不是很複雜,不要把它想的那麼麻煩
System.out.println("請輸入月份: ");
//下面一句話是獲得鍵盤輸入的方法
Scanner input=new Scanner(System.in);
int month=input.nextInt();
System.out.println("請輸入日期");
int day=input.nextInt();
int all=0;
Hello he=new Hello();
all=all+he.jisuan(month)+day;
System.out.println("2007年"+month+"月"+day+"日"+"是這一年的第"+all+"天");
//不知道能不能看懂我的解決方案如果不懂的話留言........
}
}