package average;
import java.io.*;
public class average {
private KeyboardReader reader=new KeyboardReader();
private double prompt("intput a grade (e.g.,85.3)"+"or 9999 to indicate the end of the list>>");
double grade =reader.getKeyboardDouble();
}
提示了
KeyboardReader cannot be resolved to a type
- KeyboardReader cannot be resolved to a type
- Syntax error, insert "}" to complete ClassBody
好像也不能调用上面那个java.io啊求救,,菜鸟入门
而且想顺便问一下java入门的话什么看资料比较好啊