JUnit testing, exception in threa main
- by Crystal
I am new to JUnit and am trying to follow my prof's example.
I have a Person class and a PersonTest class. When I try to compile PersonTest.java, I get the following error:
Exception in thread "main" java.lang.NoSuchMethodError: main
I am not really sure why since I followed his example.
Person.java
public class Person implements Comparable
{
String firstName;
String lastName;
String telephone;
String email;
public Person()
{
firstName = "";
lastName = "";
telephone = "";
email = "";
}
public Person(String firstName)
{
this.firstName = firstName;
}
public Person(String firstName, String lastName, String telephone, String email)
{
this.firstName = firstName;
this.lastName = lastName;
this.telephone = telephone;
this.email = email;
}
public String getFirstName()
{
return firstName;
}
public void setFirstName(String firstName)
{
this.firstName = firstName;
}
public String getLastName()
{
return lastName;
}
public void setLastName(String lastName)
{
this.lastName = lastName;
}
public String getTelephone()
{
return telephone;
}
public void setTelephone(String telephone)
{
this.telephone = telephone;
}
public String getEmail()
{
return email;
}
public void setEmail(String email)
{
this.email = email;
}
public int compareTo(Object o)
{
String s1 = this.lastName + this.firstName;
String s2 = ((Person) o).lastName + ((Person) o).firstName;
return s1.compareTo(s2);
}
public boolean equals(Object otherObject)
{
// a quick test to see if the objects are identical
if (this == otherObject) {
return true;
}
// must return false if the explicit parameter is null
if (otherObject == null) {
return false;
}
if (!(otherObject instanceof Person)) {
return false;
}
Person other = (Person) otherObject;
return firstName.equals(other.firstName) && lastName.equals(other.lastName) &&
telephone.equals(other.telephone) && email.equals(other.email);
}
public int hashCode()
{
return this.email.toLowerCase().hashCode();
}
public String toString()
{
return getClass().getName() + "[firstName = " + firstName + '\n'
+ "lastName = " + lastName + '\n'
+ "telephone = " + telephone + '\n'
+ "email = " + email + "]";
}
}
PersonTest.java
import org.junit.Test; // JDK 5.0 annotation support
import static org.junit.Assert.assertTrue; // Using JDK 5.0 static imports
import static org.junit.Assert.assertFalse; // Using JDK 5.0 static imports
import junit.framework.JUnit4TestAdapter; // Need this to be compatible with old test driver
public class PersonTest
{
/**
A test to verify equals method.
*/
@Test
public void checkEquals()
{
Person p1 = new Person("jj", "aa", "[email protected]", "1112223333");
assertTrue(p1.equals(p1)); // first check in equals method
assertFalse(p1.equals(null)); // second check in equals method
assertFalse(p1.equals(new Object())); // third chk in equals method
Person p2 = new Person("jj", "aa", "[email protected]", "1112223333");
assertTrue(p1.equals(p2)); // check for deep comparison
p1 = new Person("jj", "aa", "[email protected]", "1112223333");
p2 = new Person("kk", "aa", "[email protected]", "1112223333");
assertFalse(p1.equals(p2)); // check for deep comkparison
}
}
