[Demonstration 1]

[Buggy Method]
private void sendDataMsgToClient(String msg) {
    if (dataConnection == null || dataConnection.isClosed()) {
        sendMsgToClient("425 No data connection was established");
        debugOutput("Cannot send message, because no data connection is established");
    } else {
        dataOutWriter.println(msg);
    }
}

[Buggy Hunk]
dataOutWriter.println(msg);

[Patch]
dataOutWriter.print(msg + '\r' + '\n');

[Demonstration 2]

[Buggy Method]
public void setDescription(String desription) {
    this.description = description;
}

[Buggy Hunk]
public void setDescription(String desription){

[Patch]
public void setDescription(String description){

[Demonstration 3]

[Buggy Method]
public void updateDescriptionByID(int ID, String newDescription) {
    try {
        String newDescriptionString = "UPDATE Inventory SET ItemDescription='" + newDescription + "' WHERE ItemID=" + ID + ";";
        System.out.println(newDescriptionString);
        this.executeUpdate(conn, newDescriptionString);
        System.out.println("Update description successful");
    } catch (SQLException e) {
        System.out.println("[ERROR: Could not update description.]");
        e.printStackTrace();
        return;
    }
}

[Buggy Hunk]
String newDescriptionString = "UPDATE Inventory SET ItemDescription='" + newDescription + "' WHERE ItemID=" + ID + ";";

[Patch]
String newDescriptionString = "UPDATE Inventory SET ItemDescription='" + newDescription + "' WHERE ItemID=" + ID;