import java.util.Scanner;
public class S1{
public static void main(String[] args) {
int x;
Scanner sc = new Scanner(System.in);
do{
System.out.print("请输入大于1小于5的数字");
x = sc.nextInt();
}while(x<1 || x>5);
System.out.printf("输入的数字是%d .", x);
}
}
改成method方法,重点是输出的最后一句话(System.out.printf("输入的数字是%d .", x))要在main里。
import java.util.Scanner;
public class S1
{
public static void main(String[] args)
{
int x;
x = inputMethod();
System.out.printf("输入的数字是%d", x);
}
public static int inputMethod(){
int x;
do{
Scanner sc = new Scanner(System.in);
System.out.print("请输入大于1小于5的数字");
x = sc.nextInt();
}while(x<1 || x>5);
return x;
}
}
import java.util.Scanner;
public class S1 {
public static void main(String[] args) {
System.out.printf("输入的数字是%d .", method());
}
private static int method() {
int x;
Scanner sc = new Scanner(System.in);
do {
System.out.print("请输入大于1小于5的数字");
x = sc.nextInt();
} while (x < 1 || x > 5);
return x;
}
}