No such method error

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Javascript

Java

I'm trying to make a really simple program with two constructors. I keep getting this error

Exception in thread "main" java.lang.NoSuchMethodError: Tuition.getResidency()Ljava/lang/String;
	at UnitTest.main(UnitTest.java:14)

and I can't seem to figure out what the problem is. Here is the code.

public class Tuition {
  private String name;
  private String studentnumber;
  private String residency;
  private String credithours;

  public Tuition(String argName, String argStudentNumber, String argResidency, String argCreditHours){
    size=argName;
    name=argStudentNumber;
    residency=argResidency;
    credithours=argCreditHours;
  }

  public Tuition(String argName, String argStudentNumber, String argCreditHours){
    size=argName;
    name=argStudentNumber;
    residency=argResidency;
    credithours="IC";
  }

    public void setName(String arg){
  		name=arg;
  	}
  	public void setStudentNumber(String arg){
  		studentnumber=arg;
  	}

    public void setResidency(String arg){
      residency=arg;
    }

  	public void setCreditHours(String arg){
  		credithours=arg;
  	}

  	public String getName(){
  		return name;
  	}

  	public String getStudentNumber(){
  		return studentnumber;
  	}

    public String getResidency(){
      return residency;
    }

  	public String getCreditHours(){
  		return credithours;
  	}

public class UnitTest{
 public static void main(String[] args) {


  Tuition s1=new Tuition("435353", "Geralt Rivia", "IC", "3");
  System.out.println("Student" + s1.getStudentNumber());
  System.out.println(s1.getName());
  System.out.println("takes " + s1.getCreditHours ());
  System.out.println("credit hours. Residency = " + s1.getResidency());
  System.out.println(", tution = $" + s1.calculateTuitionIC());
}
}

What I have tried:

looking for solutions for this error. I haven't found much.