小编Min*_*ang的帖子

Eclipse不断给我以下错误:

Exception in thread "main" java.lang.Error: Unresolved compilation problems: 
input cannot be resolved
The method If(boolean) is undefined for the type bai1DinhLuatCuLong
Syntax error, insert ";" to complete Statement
F cannot be resolved to a variable

我不明白.我需要修理什么？为什么我不能使用这个If()功能？

我试过浏览Google和Bing,我已经仔细检查了我的Java示例书,但我无法解决这个问题.

import java.util.Scanner;


public class bai1DinhLuatCuLong
{
    public static void main(String[] args)
    { 
    System.out.print("Giá trì c?n tìm (F // q // r) : ");   
    char cantim = input.nextChar();

            // HERE THIS IS WHERE I PUT THE IF STATEMENT !!!
    If (cantim …