[Demonstration 1]

[Buggy Method]
public String getCityFromCoordinates(double Latitude, double Longitude) {
    String cityName = null;
    Geocoder gcd = new Geocoder(getBaseContext(), Locale.getDefault());
    List<Address> addresses;
    try {
        addresses = gcd.getFromLocation(Latitude, Longitude, 1);
        if (addresses.size() > 0) {
            System.out.println(addresses.get(0).getLocality());
            cityName = addresses.get(0).getLocality();
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
    String s = "Current incident location:" + "\n" + Latitude + "\n" + Longitude + "\n\nLocale: " + cityName;
    return s;
}

[Buggy Hunk]
String s = "Current incident location:"+ "\n" +Latitude + "\n" + Longitude + "\n\nLocale: "

[Patch]
String s = "Current latitude: " +Latitude + "\n" + "Current latitude: " + Longitude + "\nLocale: "

[Demonstration 2]

[Buggy Method]
@Override
public boolean equals(Object o) {
    if (this == o)
        return true;
    if (o == null || getClass() != o.getClass())
        return false;
    User user = (User) o;
    if (id != null ? !id.equals(user.id) : user.id != null)
        return false;
    if (login != null ? !login.equals(user.login) : user.login != null)
        return false;
    if (password != null ? !password.equals(user.password) : user.password != null)
        return false;
    if (firstName != null ? !firstName.equals(user.firstName) : user.firstName != null)
        return false;
    if (lastName != null ? !lastName.equals(user.lastName) : user.lastName != null)
        return false;
    if (authority != null ? !authority.equals(user.authority) : user.authority != null)
        return false;
    if (email != null ? !email.equals(user.email) : user.email != null)
        return false;
    if (phoneNumber != null ? !phoneNumber.equals(user.phoneNumber) : user.phoneNumber != null)
        return false;
    if (notes != null ? !notes.equals(user.notes) : user.notes != null)
        return false;
    if (organization != null ? !organization.equals(user.organization) : user.organization != null)
        return false;
    if (orgRole != null ? !orgRole.equals(user.orgRole) : user.orgRole != null)
        return false;
    if (fourteenPlus != null ? !fourteenPlus.equals(user.fourteenPlus) : user.fourteenPlus != null)
        return false;
    if (guardianFirstName != null ? !guardianFirstName.equals(user.guardianFirstName) : user.guardianFirstName != null)
        return false;
    if (guardianLastName != null ? !guardianLastName.equals(user.guardianLastName) : user.guardianLastName != null)
        return false;
    if (guardianEmail != null ? !guardianEmail.equals(user.guardianEmail) : user.guardianEmail != null)
        return false;
    if (guardianPhone != null ? !guardianPhone.equals(user.guardianPhone) : user.guardianPhone != null)
        return false;
    if (school != null ? !school.equals(user.school) : user.school != null)
        return false;
    if (gradeLevel != user.gradeLevel)
        return false;
    if (stateStudentId != null ? !stateStudentId.equals(user.stateStudentId) : user.stateStudentId != null)
        return false;
    if (orgStudentId != null ? !orgStudentId.equals(user.orgStudentId) : user.orgStudentId != null)
        return false;
    return addresses != null ? addresses.equals(user.addresses) : user.addresses == null;
}

[Buggy Hunk]
return addresses != null ? addresses.equals(user.addresses) : user.addresses == null;

[Patch]
return address != null ? address.equals(user.address) : user.address == null;

[Demonstration 3]

[Buggy Method]
public static Result service(String ownerName, String projectName, String service, boolean isAdvertise) throws IOException, UnsupportedOperationException, ServletException {
    if (!isSupportedService(service)) {
        return forbidden(String.format("Unsupported service: '%s'", service));
    }
    Project project = Project.findByOwnerAndProjectName(ownerName, projectName);
    if (project == null) {
        return notFound();
    }
    models.User user = UserApp.currentUser();
    if (!isAllowed(project, service)) {
        if (user.isAnonymous()) {
            return BasicAuthAction.unauthorized(response());
        } else {
            // If you want the Git client showing your custom message to
            // the user, the Content-Type should be exact "text/plain"
            // without any parameter. For more details, see the code at
            // https://github.com/git/git/commit/426e70d4a11ce3b4f70636d57c6a0ab16ae08a00#diff-eea0ad565ec5903a11b6023755d491cfR154
            response().setHeader("Content-Type", "text/plain");
            return forbidden(String.format("'%s' has no permission to '%s/%s'.", user.name, ownerName, projectName));
        }
    }
    if (isAdvertise) {
        return ok(RepositoryService.gitAdvertise(project, service, response()));
    } else {
        if (request().body().isMaxSizeExceeded()) {
            return status(REQUEST_ENTITY_TOO_LARGE);
        } else {
            user.visits(project);
            return ok(RepositoryService.gitRpc(project, service, request(), response()));
        }
    }
}

[Buggy Hunk]
user.name, ownerName, projectName));

[Patch]
user.loginId, ownerName, projectName));