なぜ私の.jarファイルが動作しないのですか

Question

私はjavaでプログラムを作成して実行可能な.jarファイルにエクスポートしましたが、実行しようとすると開かず、コマンドプロンプトで実行しようとすると次の例外を除きます。それは日食で完璧に動作します。以下

Exception in Application start method 
java.lang.reflect.InvocationTargetException 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:498) 
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389) 
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:498) 
at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767) 
Caused by: java.lang.RuntimeException: Exception in Application start 
method 
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917) 
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$155(LauncherImpl.java:182) 
at java.lang.Thread.run(Thread.java:745) 
Caused by: java.io.FileNotFoundException: back.jpg (No such file or directory) 
at java.io.FileInputStream.open0(Native Method) 
at java.io.FileInputStream.open(FileInputStream.java:195) 
at java.io.FileInputStream.<init>(FileInputStream.java:138) 
at java.io.FileInputStream.<init>(FileInputStream.java:93) 
at memoryMaster.memoryMaster.start(memoryMaster.java:58) 
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$162(LauncherImpl.java:863) 
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$175(PlatformImpl.java:326) 
at com.sun.javafx.application.PlatformImpl.lambda$null$173(PlatformImpl.java:295) 
at java.security.AccessController.doPrivileged(Native Method) 
at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(PlatformImpl.java:294) 
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95) 
Exception running application memoryMaster.memoryMaster 

は、私は、ファイルシステムからファイルを取得するために多くを意味している私のプロジェクト

public void start(Stage primaryStage) throws FileNotFoundException { 

    FileInputStream input = new FileInputStream("back.jpg"); // initializing 
                   // new 
                   // fileinoutstream. 
    FileInputStream one = new FileInputStream("1.png"); // initializing new 
                 // fileinoutstream. 
    FileInputStream two = new FileInputStream("2.jpg"); // initializing new 
                 // fileinoutstream. 
    FileInputStream three = new FileInputStream("3.jpg"); // initializing 
                  // new 
                  // fileinoutstream. 
    FileInputStream four = new FileInputStream("4.png"); // initializing new 
                  // fileinoutstream. 
    FileInputStream five = new FileInputStream("5.png"); // initializing new 
                  // fileinoutstream. 
    FileInputStream six = new FileInputStream("6.png"); // initializing new 
                 // fileinoutstream. 
    FileInputStream seven = new FileInputStream("7.png"); // initializing 
                  // new 
                  // fileinoutstream. 
    FileInputStream eight = new FileInputStream("8.png"); // initializing 
                  // new 
                  // fileinoutstream. 

    image = new Image(input); // initializing new image object 

    iv.add(new Image(one)); // adding image to arrayList. 
    iv.add(new Image(two)); // adding image to arrayList. 
    iv.add(new Image(three)); // adding image to arrayList. 
    iv.add(new Image(four)); // adding image to arrayList. 
    iv.add(new Image(five)); // adding image to arrayList. 
    iv.add(new Image(six)); // adding image to arrayList. 
    iv.add(new Image(seven)); // adding image to arrayList. 
    iv.add(new Image(eight)); // adding image to arrayList. 
    iv.add(iv.get(0)); // adding image to arrayList. 
    iv.add(iv.get(1)); // adding image to arrayList. 
    iv.add(iv.get(2)); // adding image to arrayList. 
    iv.add(iv.get(3)); // adding image to arrayList. 
    iv.add(iv.get(4)); // adding image to arrayList. 
    iv.add(iv.get(5)); // adding image to arrayList. 
    iv.add(iv.get(6)); // adding image to arrayList. 
    iv.add(iv.get(7)); // adding image to arrayList. 

    score.setText("Score = " + scoreKpr); // setting text to score. 
    for (int i = 0; i < 16; i++) { 
     back.add(new ImageView(image)); // adding image to arrayList. 
    } 

Answer 1

FileInputStreamに画像をインポートするために何をしたかです。 jarファイルでそれらを使用したい場合は、次の行を見てみてください。

this.getClass().getResourceAsStream();