package TestClass;/**
@version 1.11 2004-02-19
@author Cay Horstmann
*/import java.util.*;public class EmployeeTest
{
public static void main(String[] args)
{
// fill the staff array with three Employee objects
Employee[] staff = new Employee[3]; staff[0] = new Employee("Carl Cracker", 75000, 1987, 12, 15);
staff[1] = new Employee("Harry Hacker", 50000, 1989, 10, 1);
staff[2] = new Employee("Tony Tester", 40000, 1990, 3, 15); // raise everyone's salary by 5%
for (Employee e : staff)
e.raiseSalary(5); // print out information about all Employee objects
for (Employee e : staff)
System.out.println("name=" + e.getName()
+ ",salary=" + e.getSalary()
+ ",hireDay=" + e.getHireDay());
}
}class Employee
{
public Employee(String n, double s, int year, int month, int day)
{
name = n;
salary = s;
GregorianCalendar calendar = new GregorianCalendar(year, month - 1, day);
// GregorianCalendar uses 0 for January
hireDay = calendar.getTime();
} public String getName()
{
return name;
} public double getSalary()
{
return salary;
} public Date getHireDay()
{
return hireDay;
} public void raiseSalary(double byPercent)
{
double raise = salary * byPercent / 100;
salary += raise;
} private String name;
private double salary;
private Date hireDay;
}---------------------
Exception in thread "main" java.lang.NoSuchMethodError: TestClass.Employee.<init>(Ljava/lang/String;DIII)V
at TestClass.EmployeeTest.main(EmployeeTest.java:17)
@version 1.11 2004-02-19
@author Cay Horstmann
*/import java.util.*;public class EmployeeTest
{
public static void main(String[] args)
{
// fill the staff array with three Employee objects
Employee[] staff = new Employee[3]; staff[0] = new Employee("Carl Cracker", 75000, 1987, 12, 15);
staff[1] = new Employee("Harry Hacker", 50000, 1989, 10, 1);
staff[2] = new Employee("Tony Tester", 40000, 1990, 3, 15); // raise everyone's salary by 5%
for (Employee e : staff)
e.raiseSalary(5); // print out information about all Employee objects
for (Employee e : staff)
System.out.println("name=" + e.getName()
+ ",salary=" + e.getSalary()
+ ",hireDay=" + e.getHireDay());
}
}class Employee
{
public Employee(String n, double s, int year, int month, int day)
{
name = n;
salary = s;
GregorianCalendar calendar = new GregorianCalendar(year, month - 1, day);
// GregorianCalendar uses 0 for January
hireDay = calendar.getTime();
} public String getName()
{
return name;
} public double getSalary()
{
return salary;
} public Date getHireDay()
{
return hireDay;
} public void raiseSalary(double byPercent)
{
double raise = salary * byPercent / 100;
salary += raise;
} private String name;
private double salary;
private Date hireDay;
}---------------------
Exception in thread "main" java.lang.NoSuchMethodError: TestClass.Employee.<init>(Ljava/lang/String;DIII)V
at TestClass.EmployeeTest.main(EmployeeTest.java:17)
public Employee(String n, double s, int year, int month, int day)
{
name = n;
salary = s;
GregorianCalendar calendar = new GregorianCalendar(year, month - 1, day);
// GregorianCalendar uses 0 for January
hireDay = calendar.getTime();
}
这一部分出了问题。我在猜想是不是你故意弄出来的。
首先,你这两个class是分开的。先编译Empolyee.java,在编译EmpolyeeTest.java
然后修改,Empolyee.java文件,重新编译Empolyee.java
最后运行EmpolyeeTest
反正出现这问题肯定是在EmpolyeeTest编译完后修改过Empolyee,所以在运行的时候才会找不到这个方法。