菜鸟小问题
import java.io.*;
public class IOTest
{
public static void main ( String [ ] args ) throws IOException
{
int b;
System.out.print ( "Input a integer:" );
int a = Integer.parseInt ( System.in.read ( ) );
System.out.println ( a + b );
}
}
这会出错,我就想从键盘获得一个整数,进行运算,很简单,怎么改,谢谢了