exception

问题 I am trying to load the FXML file and show it as an application window, but i get an exception. The FXML file was created by the FXML Scene Builder. Sup.java file: package sup; import java.io.IOException; import javafx.application.Application; import javafx.fxml.FXMLLoader; import javafx.scene.Parent; import javafx.scene.Scene; public class Sup extends Application { @Override public void start(Stage primaryStage) throws IOException { Parent root = FXMLLoader.load(getClass().getResource(

问题 I need help to understand the crash log i received from the client. The app works fine on my phone but it crashes with him. I have OS 3.0 installed here while my client has upgraded to OS 3.1. Client reported app crashes usually when he starts the app. Why I am getting EXC_CRASH (SIGABRT)? Can anybody point me in the right direction here? Incident Identifier: AA3A4B6A-BD0D-473F-B1D2-EF9655A0116E CrashReporter Key: f3a4736dc8d450a3cb0ecb7367313dbbd816c484 Process: MyApp [730] Path: /var/mobile

问题 after define a property file in idea 10.5 when i try to use it,compiler show me Null Pointer Exception!I try anything that i think fix it among change property file path,... here is the code that i write: thanks. beginner programmer!!! public class MainDlg{ Properties properties=new Properties(); public MainDlg() { try { InputStream reader=MainDlg.class.getResourceAsStream("propFile"); properties.load(reader); 回答1: Sounds like the reader is null. Make sure the path is correct. If property

问题 I have a program running on many different linux distros. When I compile it on FreeBSD 10.1 for some reason the catch clauses stop working and exceptions that should get caught crash my program. When debugging I modified one of the catch clauses to "catch (...)" and still the exception wasn't caught. I guess the issue is related to the linker, but I don't know how to debug it futher. When I tried compiling a test program that simply throws and catches and exception it worked - so I guess the

问题 import sys import time import threading class exThread(threading.Thread): def __init__(self, threadId): threading.Thread.__init__(self) self.threadId = threadId def run(self): try: while 1: pass except KeyboardInterrupt: print "Ctrl-C caught by thread" finally: print "Thread's finally clause being executed" sys.exit() # Same as thread.exit() cond = True def func(): pass try: th = exThread(1) th.start() while True: if cond: func() except KeyboardInterrupt: print "Ctrl-C caught by main thread"

问题 guys. Can't output JSON string/object into TextView. Started programming in Android Studio few day ago, so...need your help, guys. I have mainActivity, AllProductsActivity and EditProductActivity. All product activity getting JSON array from mysql database and showing in ListView. After clicking on List Item it goes to EditProductActivity.That works fine. But i can't understand what i need to do with this error... class GetProductDetails extends AsyncTask<String, String, JSONObject> { //Show

问题 I'm going to set the child GameObject 's SetActive to true when the parent GameObject is triggered. Like this picture, BallIndigo1 is the parent GameoOject and x is the child GameObject which is in SetActive(false) . and I wrote code like this: void OnTriggerEnter2D(Collider2D col) { if (col.gameObject.activeSelf == true) { if (col.transform.GetChild(0) != null) { col.transform.GetChild(0).gameObject.SetActive(true); } else { Debug.Log("No child"); } } } But the result says: I don't know why

问题 This code: $fql2 = "SELECT uid, name FROM user WHERE uid IN (SELECT uid2 FROM friend WHERE uid1 = xxxxxxxxx)"; $params = array( 'method' => 'fql.query', 'access_token' => $user->accessToken, 'query' => $fql2, 'callback' => '' ); $result = $facebook->api($params); var_dump($result); Gives me error: Uncaught Exception: 101: Invalid API key My appId and secret are correct. I have checked it by executing $facebook->api('/me') which works perfectly alright. My access token is alright too with all

问题 The following code is a snippet of a program I am getting a nullpointer exception from. When I press the "Add" button on the GUI, an error message pointing to this line: buttonPanel.addButton.setEnabled(false); is displayed. I'm guessing that the addButton is null for some reason although I instantiated it in the constructor of buttonPanel: addButton = new JButton("Add"); addButton.addActionListener(buttonListener); Why is the null pointer error Exception in thread "AWT-EventQueue-0" java

问题 when saving an object with LinkedList on android API 10 I obtain an error: 08-10 14:37:45.091: E/AndroidRuntime(29845): FATAL EXCEPTION: Thread-17 08-10 14:37:45.091: E/AndroidRuntime(29845): java.lang.IllegalArgumentException: no char field 'exponential' 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.EmulatedFields.put(EmulatedFields.java:459) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.EmulatedFieldsForDumping.put(EmulatedFieldsForDumping.java:83) 08-10 14:37:45.091: E