java错误：表达式void inputInfo（）的启动非法；
我知道像这样的问题以前已经被回答过，但我似乎找不到任何分号缺失。那么，我的代码员怎么了？请帮忙
我的任务是：开发一个Java应用程序来计算不同类型员工的月工资。employee类型是基于父基类employee在子类数组中创建的。为每个类和驱动程序类提供初始代码。下面是我为主课准备的内容。当我将inputInfo方法置于main之外，然后尝试使用它时，会收到大量错误消息，例如：
error: cannot find symbol
earnings = input.nextDouble();
^
symbol: variable earnings
location: class PayrollSystemTest
PayrollSystemTest.java:68: error: cannot find symbol
earnings = input.nextDouble();
^
symbol: variable input
location: class PayrollSystemTest
PayrollSystemTest.java:69: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable dob
location: class PayrollSystemTest
PayrollSystemTest.java:69: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable month
location: class PayrollSystemTest
PayrollSystemTest.java:69: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable day
location: class PayrollSystemTest
PayrollSystemTest.java:69: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable year
location: class PayrollSystemTest
PayrollSystemTest.java:70: error: cannot find symbol
SalariedEmployee salariedEmployee1 = new SalariedEmployee(firstName, lastName, socialNum, dob, earnings);
^
symbol: variable firstName
location: class PayrollSystemTest
PayrollSystemTest.java:70: error: cannot find symbol
SalariedEmployee salariedEmployee1 = new SalariedEmployee(firstName, lastName, socialNum, dob, earnings);
^
symbol: variable lastName
location: class PayrollSystemTest
PayrollSystemTest.java:70: error: cannot find symbol
SalariedEmployee salariedEmployee1 = new SalariedEmployee(firstName, lastName, socialNum, dob, earnings);
^
symbol: variable socialNum
location: class PayrollSystemTest
PayrollSystemTest.java:70: error: cannot find symbol
SalariedEmployee salariedEmployee1 = new SalariedEmployee(firstName, lastName, socialNum, dob, earnings);
^
symbol: variable dob
location: class PayrollSystemTest
PayrollSystemTest.java:70: error: cannot find symbol
SalariedEmployee salariedEmployee1 = new SalariedEmployee(firstName, lastName, socialNum, dob, earnings);
^
symbol: variable earnings
location: class PayrollSystemTest
PayrollSystemTest.java:75: error: cannot find symbol
earnings = input.nextDouble();
^
symbol: variable earnings
location: class PayrollSystemTest
PayrollSystemTest.java:75: error: cannot find symbol
earnings = input.nextDouble();
^
symbol: variable input
location: class PayrollSystemTest
PayrollSystemTest.java:76: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable dob
location: class PayrollSystemTest
PayrollSystemTest.java:76: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable month
location: class PayrollSystemTest
PayrollSystemTest.java:76: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable day
location: class PayrollSystemTest
PayrollSystemTest.java:76: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable year
location: class PayrollSystemTest
PayrollSystemTest.java:77: error: cannot find symbol
SalariedEmployee salariedEmployee2 = new SalariedEmployee(firstName, lastName, socialNum, dob, earnings);
^
symbol: variable firstName
location: class PayrollSystemTest
PayrollSystemTest.java:77: error: cannot find symbol
SalariedEmployee salariedEmployee2 = new SalariedEmployee(firstName, lastName, socialNum, dob, earnings);
^
symbol: variable lastName
location: class PayrollSystemTest
PayrollSystemTest.java:77: error: cannot find symbol
SalariedEmployee salariedEmployee2 = new SalariedEmployee(firstName, lastName, socialNum, dob, earnings);
^
symbol: variable socialNum
location: class PayrollSystemTest
PayrollSystemTest.java:77: error: cannot find symbol
SalariedEmployee salariedEmployee2 = new SalariedEmployee(firstName, lastName, socialNum, dob, earnings);
^
symbol: variable dob
location: class PayrollSystemTest
PayrollSystemTest.java:77: error: cannot find symbol
SalariedEmployee salariedEmployee2 = new SalariedEmployee(firstName, lastName, socialNum, dob, earnings);
^
symbol: variable earnings
location: class PayrollSystemTest
PayrollSystemTest.java:82: error: cannot find symbol
grossSales = input.nextDouble();
^
symbol: variable grossSales
location: class PayrollSystemTest
PayrollSystemTest.java:82: error: cannot find symbol
grossSales = input.nextDouble();
^
symbol: variable input
location: class PayrollSystemTest
PayrollSystemTest.java:84: error: cannot find symbol
commissionRate = input.nextDouble();
^
symbol: variable commissionRate
location: class PayrollSystemTest
PayrollSystemTest.java:84: error: cannot find symbol
commissionRate = input.nextDouble();
^
symbol: variable input
location: class PayrollSystemTest
PayrollSystemTest.java:85: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable dob
location: class PayrollSystemTest
PayrollSystemTest.java:85: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable month
location: class PayrollSystemTest
PayrollSystemTest.java:85: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable day
location: class PayrollSystemTest
PayrollSystemTest.java:85: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable year
location: class PayrollSystemTest
PayrollSystemTest.java:86: error: cannot find symbol
CommissionEmployee commissionEmployee = new CommissonEmployee(firstName, lastName, socialNum, dob, grossSales, commissonRate);
^
symbol: class CommissonEmployee
location: class PayrollSystemTest
PayrollSystemTest.java:86: error: cannot find symbol
CommissionEmployee commissionEmployee = new CommissonEmployee(firstName, lastName, socialNum, dob, grossSales, commissonRate);
^
symbol: variable firstName
location: class PayrollSystemTest
PayrollSystemTest.java:86: error: cannot find symbol
CommissionEmployee commissionEmployee = new CommissonEmployee(firstName, lastName, socialNum, dob, grossSales, commissonRate);
^
symbol: variable lastName
location: class PayrollSystemTest
PayrollSystemTest.java:86: error: cannot find symbol
CommissionEmployee commissionEmployee = new CommissonEmployee(firstName, lastName, socialNum, dob, grossSales, commissonRate);
^
symbol: variable socialNum
location: class PayrollSystemTest
PayrollSystemTest.java:86: error: cannot find symbol
CommissionEmployee commissionEmployee = new CommissonEmployee(firstName, lastName, socialNum, dob, grossSales, commissonRate);
^
symbol: variable dob
location: class PayrollSystemTest
PayrollSystemTest.java:86: error: cannot find symbol
CommissionEmployee commissionEmployee = new CommissonEmployee(firstName, lastName, socialNum, dob, grossSales, commissonRate);
^
symbol: variable grossSales
location: class PayrollSystemTest
PayrollSystemTest.java:86: error: cannot find symbol
CommissionEmployee commissionEmployee = new CommissonEmployee(firstName, lastName, socialNum, dob, grossSales, commissonRate);
^
symbol: variable commissonRate
location: class PayrollSystemTest
PayrollSystemTest.java:91: error: cannot find symbol
grossSales = input.nextDouble();
^
symbol: variable grossSales
location: class PayrollSystemTest
PayrollSystemTest.java:91: error: cannot find symbol
grossSales = input.nextDouble();
^
symbol: variable input
location: class PayrollSystemTest
PayrollSystemTest.java:93: error: cannot find symbol
commissionRate = input.nextDouble();
^
symbol: variable commissionRate
location: class PayrollSystemTest
PayrollSystemTest.java:93: error: cannot find symbol
commissionRate = input.nextDouble();
^
symbol: variable input
location: class PayrollSystemTest
PayrollSystemTest.java:95: error: cannot find symbol
baseSalary = input.nextDouble();
^
symbol: variable baseSalary
location: class PayrollSystemTest
PayrollSystemTest.java:95: error: cannot find symbol
baseSalary = input.nextDouble();
^
symbol: variable input
location: class PayrollSystemTest
PayrollSystemTest.java:96: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable dob
location: class PayrollSystemTest
PayrollSystemTest.java:96: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable month
location: class PayrollSystemTest
PayrollSystemTest.java:96: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable day
location: class PayrollSystemTest
PayrollSystemTest.java:96: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable year
location: class PayrollSystemTest
PayrollSystemTest.java:97: error: cannot find symbol
BasePlusCommissionEmployee basePlusCommissionEmployee = new BasePlusCommissionEmployee(firstName, lastName, socialNum, dob, grossSales, commissionRate, baseSalary);
^
symbol: variable firstName
location: class PayrollSystemTest
PayrollSystemTest.java:97: error: cannot find symbol
BasePlusCommissionEmployee basePlusCommissionEmployee = new BasePlusCommissionEmployee(firstName, lastName, socialNum, dob, grossSales, commissionRate, baseSalary);
^
symbol: variable lastName
location: class PayrollSystemTest
PayrollSystemTest.java:97: error: cannot find symbol
BasePlusCommissionEmployee basePlusCommissionEmployee = new BasePlusCommissionEmployee(firstName, lastName, socialNum, dob, grossSales, commissionRate, baseSalary);
^
symbol: variable socialNum
location: class PayrollSystemTest
PayrollSystemTest.java:97: error: cannot find symbol
BasePlusCommissionEmployee basePlusCommissionEmployee = new BasePlusCommissionEmployee(firstName, lastName, socialNum, dob, grossSales, commissionRate, baseSalary);
^
symbol: variable dob
location: class PayrollSystemTest
PayrollSystemTest.java:97: error: cannot find symbol
BasePlusCommissionEmployee basePlusCommissionEmployee = new BasePlusCommissionEmployee(firstName, lastName, socialNum, dob, grossSales, commissionRate, baseSalary);
^
symbol: variable grossSales
location: class PayrollSystemTest
PayrollSystemTest.java:97: error: cannot find symbol
BasePlusCommissionEmployee basePlusCommissionEmployee = new BasePlusCommissionEmployee(firstName, lastName, socialNum, dob, grossSales, commissionRate, baseSalary);
^
symbol: variable commissionRate
location: class PayrollSystemTest
PayrollSystemTest.java:97: error: cannot find symbol
BasePlusCommissionEmployee basePlusCommissionEmployee = new BasePlusCommissionEmployee(firstName, lastName, socialNum, dob, grossSales, commissionRate, baseSalary);
^
symbol: variable baseSalary
location: class PayrollSystemTest
PayrollSystemTest.java:102: error: cannot find symbol
wage = input.nextDouble();
^
symbol: variable wage
location: class PayrollSystemTest
PayrollSystemTest.java:102: error: cannot find symbol
wage = input.nextDouble();
^
symbol: variable input
location: class PayrollSystemTest
PayrollSystemTest.java:104: error: cannot find symbol
hours = input.nextDouble();
^
symbol: variable hours
location: class PayrollSystemTest
PayrollSystemTest.java:104: error: cannot find symbol
hours = input.nextDouble();
^
symbol: variable input
location: class PayrollSystemTest
PayrollSystemTest.java:105: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable dob
location: class PayrollSystemTest
PayrollSystemTest.java:105: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable month
location: class PayrollSystemTest
PayrollSystemTest.java:105: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable day
location: class PayrollSystemTest
PayrollSystemTest.java:105: error: cannot find symbol
dob = new Date(month, day, year);
^
symbol: variable year
location: class PayrollSystemTest
PayrollSystemTest.java:106: error: cannot find symbol
HourlyEmployee hourlyEmployee = new HourlyEmployee(firstName, lastName, socialNum, dob, wage, hours);
^
symbol: variable firstName
location: class PayrollSystemTest
PayrollSystemTest.java:106: error: cannot find symbol
HourlyEmployee hourlyEmployee = new HourlyEmployee(firstName, lastName, socialNum, dob, wage, hours);
^
symbol: variable lastName
location: class PayrollSystemTest
PayrollSystemTest.java:106: error: cannot find symbol
HourlyEmployee hourlyEmployee = new HourlyEmployee(firstName, lastName, socialNum, dob, wage, hours);
^
symbol: variable socialNum
location: class PayrollSystemTest
PayrollSystemTest.java:106: error: cannot find symbol
HourlyEmployee hourlyEmployee = new HourlyEmployee(firstName, lastName, socialNum, dob, wage, hours);
^
symbol: variable dob
location: class PayrollSystemTest
PayrollSystemTest.java:106: error: cannot find symbol
HourlyEmployee hourlyEmployee = new HourlyEmployee(firstName, lastName, socialNum, dob, wage, hours);
^
symbol: variable wage
location: class PayrollSystemTest
PayrollSystemTest.java:106: error: cannot find symbol
HourlyEmployee hourlyEmployee = new HourlyEmployee(firstName, lastName, socialNum, dob, wage, hours);
^
symbol: variable hours
location: class PayrollSystemTest
PayrollSystemTest.java:150: error: cannot find symbol
CommissionEmployee employee = (CommissonEmployee) currentEmployee;
^
symbol: class CommissonEmployee
location: class PayrollSystemTest
69 errors
----jGRASP wedge2: exit code for process is 1.
----jGRASP: operation complete.
这是我的密码
import java.util.Scanner;
public class PayrollSystemTest
{
public static void main( String args[] )
{
Employee employees[] = new Employee[ 5 ];
int i = 0;
inputInfo();
System.out.print("What are the earnings of the salaried
employee?");
earnings = input.nextDouble();
dob = new Date(month, day, year);
SalariedEmployee salariedEmployee1 = new
SalariedEmployee(firstName, lastName, socialNum, dob,
earnings);
employees[i] = salariedEmployee1; i++;
inputInfo();
System.out.print("What are the earnings of the next salaried
employee?");
earnings = input.nextDouble();
dob = new Date(month, day, year);
SalariedEmployee salariedEmployee2 = new
SalariedEmployee(firstName, lastName, socialNum, dob,
earnings);
employees[i] = salariedEmployee2; i++;
inputInfo();
System.out.print("What are the gross sales of the commission
employee?");
grossSales = input.nextDouble();
System.out.print("What is the commission rate?");
commissionRate = input.nextDouble();
dob = new Date(month, day, year);
CommissionEmployee commissionEmployee = new
CommissonEmployee(firstName, lastName, socialNum, dob,
grossSales, commissonRate);
employees[i] = commissionEmployee; i++;
inputInfo();
System.out.print("What are the gross sales of the base plus
commission employee?");
grossSales = input.nextDouble();
System.out.print("What is the commission rate?");
commissionRate = input.nextDouble();
System.out.print("What is the base salary of the base plus
commission employee?");
baseSalary = input.nextDouble();
dob = new Date(month, day, year);
BasePlusCommissionEmployee basePlusCommissionEmployee = new
BasePlusCommissionEmployee(firstName, lastName,
socialNum,
dob, grossSales, commissionRate, baseSalary);
employees[i] = basePlusCommissionEmployee; i++;
inputInfo();
System.out.print("What is the wage of the hourly
employee?");
wage = input.nextDouble();
System.out.print("What are the hours of the hourly
employee?");
hours = input.nextDouble();
dob = new Date(month, day, year);
HourlyEmployee hourlyEmployee = new
HourlyEmployee(firstName,
lastName, socialNum, dob, wage, hours);
employees[i] = hourlyEmployee; i++;
System.out.println( "Employees processed polymorphically:\n"
);
// generically process each element in array employees
for ( Employee currentEmployee : employees )
{
System.out.println( currentEmployee ); // invokes
toString
if(currentEmployee instanceof SalariedEmployee)
{
SalariedEmployee employee = (SalariedEmployee)
currentEmployee;
double oldBaseSalary = employee.getWeeklySalary();
employee.setWeeklySalary(4 * oldBaseSalary);
System.out.printf("earned: ", employee.earnings());
}
if(currentEmployee instanceof HourlyEmployee)
{
HourlyEmployee employee = (HourlyEmployee) currentEmployee;
double oldBaseSalary = employee.getHours() *
employee.getWage();
employee.setWage(4 * oldBaseSalary);
System.out.printf("earned: ", employee.getWage());
}
if(currentEmployee instanceof CommissionEmployee)
{
CommissionEmployee employee = (CommissonEmployee)
currentEmployee;
double oldBaseSalary = employee.getGrossSales() *
employee.getCommissionRate();
employee.setGrossSales(4 * oldBaseSalary);
System.out.printf("earned: ", employee.getGrossSales());
}
// determine whether element is a BasePlusCommissionEmployee
if ( currentEmployee instanceof BasePlusCommissionEmployee )
{
// downcast Employee reference to
// BasePlusCommissionEmployee reference
BasePlusCommissionEmployee employee =
( BasePlusCommissionEmployee ) currentEmployee;
double oldBaseSalary = employee.getBaseSalary();
employee.setBaseSalary( 4 * oldBaseSalary );
System.out.printf(
"new base salary with 10%% increase is: $%,.2f\n",
employee.getBaseSalary() );
} // end if
System.out.printf(
"earned $%,.2f\n\n", currentEmployee.earnings() );
} // end for
// get type name of each object in employees array
for ( int j = 0; j < employees.length; j++ )
System.out.printf( "Employee %d is a %s\n", j,
employees[ j ].getClass().getName() );
} // end main
static void inputInfo()
{
Scanner input = new Scanner(System.in);
String firstName;
String lastName;
String socialNum;
double earnings;
int month;
int day;
int year;
double wage;
double hours;
double grossSales;
double commissionRate;
double baseSalary;
Date dob = new Date();
System.out.print("What is the first name of the employee?");
firstName = input.next();
System.out.print("What is the last name of the employee?");
lastName = input.next();
System.out.print("What is the social security number of the
employee?");
socialNum = input.next();
System.out.print("What month was the employee born?");
month = input.nextInt();
System.out.print("What day was the employee born?");
day = input.nextInt();
System.out.print("What year was the employee born?");
year = input.nextInt();
}
} // end class PayrollSystemTest
# 1 楼答案
有三件事不对
1）
main是类的方法inputInfo是类的方法。不能嵌套方法定义。您需要}在void inputInfo之前结束main的主体。添加闭合大括号，并确保所有其他大括号按预期配对2）所有这些数据声明看起来都应该是类的数据成员，因此需要在
main方法声明之外3）
void inputInfo()之后的分号错误地终止了inputInfo的定义，这使得以下{ … }内容超出了任何方法，因此是非法的。删除分号# 2 楼答案
您的代码中存在多个问题：
1）类别和主要方法没有结束括号
2）方法声明不应以结尾（
void inputInfo();）3）一个方法不应该在另一个方法中声明，您调用了它但不能声明。（
inputInfo()在side main方法中声明）4）在main方法中声明的变量不应该被
inputInfo();访问，因为它们对main方法是私有的5）如果要从
main方法调用inputInfo()，则inputInfo()应声明为静态6）如果声明类级别，则所有变量都应声明为静态变量，或者应该是方法的私有变量，因为静态方法不能使用非静态方法/变量
因此，更新后的代码如下所示：