类型的非法开始 - 括号

Question

我为此代码获得的错误：类型是非法的开始。

我无法确定在下面的代码中放置括号的位置：

import java.util.Scanner; public class TaxCalculator {
public static void main(String [] args)
{   
    Scanner keyboard = new Scanner(System.in);
    System.out.println("What is your income?");
    double income; //Income 
    income = keyboard.nextDouble();
    System.out.println("How many dependents are in your household?");
    int dependents; //Dependents
    dependents = keyboard.nextInt();
}
public static void sd();
int singleyes = 5950;
int singleno = 11900;
boolean single = true;
if (single = yes) 
        StandardDeduction = 'yes';
    } else if (single = no) {
        StandardDeduction = 'no'; }

Answer 1

您的sd方法声明不正确。布尔值永远不会是yes或no，String（s）被双引号括起来。此

public static void sd();

应该是

public static String sd() {
    int singleyes = 5950;
    int singleno = 11900;
    boolean single = true;
    if (single) { 
        StandardDeduction = "yes";
    } else {
        StandardDeduction = "no";
    } 
}

最后，分号作为无操作声明，不能出现在声明正文之外。