编译代码时出现非法启动表达式错误

Question

有些人可以帮助我编写代码，但是当我尝试使用comppile时，我总是收到错误。错误：表达式的非法开始（第17行）...箭头指向joption代码的末尾。我不明白我想要做什么。继承人的代码：

public class Project0 { 

public static void main(String[] args) { 

    char uppercase = 'E'; 
    char lowercase = 'e'; 
    int isLower=0; 
    int isUpper =0; 
    String inputWord; 

inputWord = JOptionPane.showInputDialog(null, "Please enter a sentence"); 
    while (!inputWord.equals("stop")) 
     { 
     isLower = wordIsThere(inputWord, lowercase); 
     isUpper = wordIsThere(inputWord, uppercase); 

     JOptionPane.showMessageDialog(null, ("Number of " +inputWord+ " Lower: " +isLower+ "Upper: " +isUpper+)); 

     inputWord = JOptionPane.showInputDialog(null, "Please enter a sentence or enter stop"); 
     isUpper=0;//reset 
     isLower=0; 
}//while ends here. 

     System.out.println("ENDS"); 
    }//main 
    public static int wordIsThere(String findMe, char theLetter) 
    { 
    int count=0; 
    for (int i=0; i<findMe.length(); i++) 
    if (findMe.charAt(i) == theLetter) 
count++; 
     return count; 
    } 
     } 

Answer 1

从showMessageDialog方法

JOptionPane.showMessageDialog 
    (null, ("Number of " +inputWord+ " Lower: " +isLower+ "Upper: " +isUpper)); 
                     ^

Answer 2

删除最后+操作你必须在你的字符串连接的末尾一个额外的+，所以Java期待别的东西来添加。

//                Here 
("Number of " +inputWord+ " Lower: " +isLower+ "Upper: " +isUpper+) 

删除+或添加其他内容到并置中。