偶在JBUILDER里写第一个JAVA程序中遇到的报错

[samenzhou]

程序如下：
import java.io.*;
public class Average {
public static void main ( String args[ ] ) throws IOException
{ int counter, garde, total, avergae;
total = 0;
counter = 1;

while ( counter <= 10 ){
System.out.print("Enter letter grade:");
System.out.flush();
System.in.read();

if ( grade == 'A' );
total = total + 4;
else if( grade == 'B' )
total = total + 3;
else if ( grade == 'C')
total = total +2;
else if ( grade == 'D' );
total = total + 1;
else if ( grade == 'F' );
total = total + 0;
System.in.skip(1);
counter = counter + 1;
}
avaerage = total / 10 ;
System.out.println( "class avergae is " + average );
}
}


在JB中老是显示我的else if 语句有问题
报错如下：
'else'without'if'at line 25
可是我的ELSE IF 语句是从书上抄的，应该不会有错误的呀！

[hayai]

if ( grade == 'A' );
不应该有 ;

[newman0708]

对，这可能是你的笔误吧，改了就可以运行了。

[samenzhou]

谢谢各位老大。