面试计划
准备面试@初学者水平
我在代码
下运行时遇到错误package InterviewPrograms;
import java.util.Scanner;
class Utility
{
static boolean numberOrNot(String input)
{
try
{
Integer.parseInt(input);
}
catch(NumberFormatException ex)
{
return false;
}
return true;
}
}
public class CheckMobileNumber
{
@SuppressWarnings("resource")
public static void main (String args[])
{
Scanner input = new Scanner(System.in);
System.out.println("Enter the value to check number or not and its indian mobile number or not");
String value = input.next();
if(Utility.numberOrNot(value))
{
if(value.length() == 10)
{
System.out.println("Enter number is integer and its indian mobile number");
}
else
{
System.out.println("Enter number is integer but not a indian mobile number");
}
}
else
{
System.out.println("Enter value is not a number");
}
}
}
错误如下
线程中的异常" main" java.lang.NumberFormatException:用于输入 string:" 9867233256"在 java.lang.NumberFormatException.forInputString(未知来源)at java.lang.Integer.parseInt(未知来源)at java.lang.Integer.parseInt(未知来源)at InterviewPrograms.CheckMobileNumber.main(CheckMobileNumber.java:29)
提前致谢
答案 0 :(得分:1)
尝试long
而不是int
:
Long.parseLong(input);
int
提供错误,因为其范围仅为2,147,483,647(inclusive)
。