发布网友 发布时间:2022-04-25 07:04
共1个回答
热心网友 时间:2023-11-05 15:22
可以这么用:
public class Test {
public static void main(String[] args) {
char a='A';
String b="chinaboy";
if(Double.isNaN(a))
System.out.println(a+" is not a number!");
else
System.out.println(a+" is a number.");
}
}
热心网友 时间:2023-11-05 15:22
可以这么用:
public class Test {
public static void main(String[] args) {
char a='A';
String b="chinaboy";
if(Double.isNaN(a))
System.out.println(a+" is not a number!");
else
System.out.println(a+" is a number.");
}
}
热心网友 时间:2023-11-05 15:22
可以这么用:
public class Test {
public static void main(String[] args) {
char a='A';
String b="chinaboy";
if(Double.isNaN(a))
System.out.println(a+" is not a number!");
else
System.out.println(a+" is a number.");
}
}
热心网友 时间:2023-11-05 15:22
可以这么用:
public class Test {
public static void main(String[] args) {
char a='A';
String b="chinaboy";
if(Double.isNaN(a))
System.out.println(a+" is not a number!");
else
System.out.println(a+" is a number.");
}
}
热心网友 时间:2023-11-05 15:22
可以这么用:
public class Test {
public static void main(String[] args) {
char a='A';
String b="chinaboy";
if(Double.isNaN(a))
System.out.println(a+" is not a number!");
else
System.out.println(a+" is a number.");
}
}
热心网友 时间:2023-11-05 15:22
可以这么用:
public class Test {
public static void main(String[] args) {
char a='A';
String b="chinaboy";
if(Double.isNaN(a))
System.out.println(a+" is not a number!");
else
System.out.println(a+" is a number.");
}
}