Discussoes de Programacao e Tecnologia

Erro de null pointer, porém, não consigo descobrir por que

2 respostas
javafxjava
E
Eduardo_Abreu

Olá galera, estou tendo um problema ao construir um simples aplicativo de cinema, o propósito é adicionar e apagar filmes que estão passando, porém, quando tento editar ou adicionar filmes, o método do botão aceitar dá erro de java.lang.NullPointerException, postei lá no stackoverflow só que a galera marcou como duplicado, eu estou seguindo um tutorial e acredito que meu código está igual, sendo que o da pessoa que criou o tutorial não está dando erro, segue o código do controller onde acontece o erro e o erro, respectivamente:
package projeto.resources;

import com.jfoenix.controls.JFXTextField;

import javafx.fxml.FXML;
import javafx.scene.control.Alert;
import javafx.scene.control.Alert.AlertType;
import javafx.stage.Stage;
import projeto.Filmes;
import projeto.MainApp;

public class EditarFilmeController {

	@FXML
	private JFXTextField tituloField;

	@FXML
	private JFXTextField categoriaField;

	@FXML
	private JFXTextField protagonistaField;

	@FXML
	private JFXTextField duracaoField;

	@FXML
	private JFXTextField diretorField;

	@FXML
	private JFXTextField classificacaoField;

	@FXML
	private JFXTextField salaField;

	private Stage dialogStage;
	private Filmes filme;
	private boolean clicado = false;

	@FXML
	private void initialize() {

	}

	public void setDialogStage(Stage dialogStage) {
		this.dialogStage = dialogStage;

	}

	public void setFilme(Filmes filme) {
		tituloField.setText(filme.getNome());
		categoriaField.setText(filme.getCategoria());
		protagonistaField.setText(filme.getProtagonista());
		duracaoField.setText(filme.getDuracao());
		diretorField.setText(filme.getDiretor());
		classificacaoField.setText(filme.getClassificacao());

	}

	public boolean clicado() {
		return clicado;
	}

	// se o usuario clicar aceitar:
	@FXML
	private void handleAceitar() {
		if (isInputValido()) {
			filme.setNome(tituloField.getText());
			filme.setCategoria(categoriaField.getText());
			filme.setClassificacao(classificacaoField.getText());
			filme.setProtagonista(protagonistaField.getText());
			filme.setDuracao(duracaoField.getText());
			filme.setDiretor(diretorField.getText());
			clicado = true;
			dialogStage.close();
		}
	}

	@FXML
	private void handleCancelar() {
		dialogStage.close();
	}

	private boolean isInputValido() {
		String mensagemErro = "";

		if (tituloField.getText() == null || tituloField.getText().length() == 0) {
			mensagemErro += "Titulo invalido ou vazio!\n";
		}
		if (categoriaField.getText() == null || categoriaField.getText().length() == 0) {
			mensagemErro += "Categoria invalida ou vazia!\n";
		}
		if (classificacaoField.getText() == null || classificacaoField.getText().length() == 0) {
			mensagemErro += "Classificacao invalida ou vazia!\n";
		}

		if (protagonistaField.getText() == null || protagonistaField.getText().length() == 0) {
			mensagemErro += "Protagonista invalido ou vazio!\n";
		}
		if (duracaoField.getText() == null || duracaoField.getText().length() == 0) {
			mensagemErro += "Duracao invalido ou vazio!\n";
		}
		if (diretorField.getText() == null || diretorField.getText().length() == 0) {
			mensagemErro += "Diretor invalido ou vazio!\n";
		}
		if (mensagemErro.length() == 0) {
			return true;
		} else {
			Alert alerta = new Alert(AlertType.WARNING);
			alerta.initOwner(dialogStage);
			alerta.setHeaderText("Por favor corrija as informações");
			alerta.setTitle("Informação inválida");
			alerta.setContentText(mensagemErro);
			alerta.showAndWait();
			return false;
		}
	}
}

E o erro:

Exception in thread “JavaFX Application Thread” java.lang.RuntimeException: java.lang.reflect.InvocationTargetException

at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1774)

at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657)

at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)

at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)

at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)

at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)

at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)

at javafx.event.Event.fireEvent(Event.java:198)

at javafx.scene.Node.fireEvent(Node.java:8413)

at javafx.scene.control.Button.fire(Button.java:185)

at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)

at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)

at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)

at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)

at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)

at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)

at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)

at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)

at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)

at javafx.event.Event.fireEvent(Event.java:198)

at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)

at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485)

at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)

at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)

at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:394)

at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)

at java.security.AccessController.doPrivileged(Native Method)

at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$353(GlassViewEventHandler.java:432)

at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)

at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:431)

at com.sun.glass.ui.View.handleMouseEvent(View.java:555)

at com.sun.glass.ui.View.notifyMouse(View.java:937)

at com.sun.glass.ui.win.WinApplication._enterNestedEventLoopImpl(Native Method)

at com.sun.glass.ui.win.WinApplication._enterNestedEventLoop(WinApplication.java:204)

at com.sun.glass.ui.Application.enterNestedEventLoop(Application.java:511)

at com.sun.glass.ui.EventLoop.enter(EventLoop.java:107)

at com.sun.javafx.tk.quantum.QuantumToolkit.enterNestedEventLoop(QuantumToolkit.java:590)

at javafx.stage.Stage.showAndWait(Stage.java:474)

at projeto.MainApp.showEditarFilmeDialog(MainApp.java:98)

at projeto.resources.FilmeOverviewController.handleNovoFilme(FilmeOverviewController.java:102)

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.reflect.misc.Trampoline.invoke(MethodUtil.java:71)

at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)

at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1771)

at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657)

at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)

at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)

at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)

at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)

at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)

at javafx.event.Event.fireEvent(Event.java:198)

at javafx.scene.Node.fireEvent(Node.java:8413)

at javafx.scene.control.Button.fire(Button.java:185)

at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)

at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)

at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)

at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)

at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)

at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)

at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)

at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)

at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)

at javafx.event.Event.fireEvent(Event.java:198)

at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)

at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485)

at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)

at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)

at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:394)

at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)

at java.security.AccessController.doPrivileged(Native Method)

at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$353(GlassViewEventHandler.java:432)

at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)

at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:431)

at com.sun.glass.ui.View.handleMouseEvent(View.java:555)

at com.sun.glass.ui.View.notifyMouse(View.java:937)

at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)

at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)

at java.lang.Thread.run(Thread.java:748)

Caused by: 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 sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)

at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)

at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1771)

… 119 more

Caused by: java.lang.NullPointerException

at projeto.resources.EditarFilmeController.handleAceitar(EditarFilmeController.java:67)

… 129 more
Alura Desenvolvimento Back-End Java Sua Carreira em desenvolvimento back-end Java: dos fundamentos à arquitetura de sistemas...

2 Respostas

E
Eduardo_Abreu 1 like

Esqueci de adicionar this.filme = filme; tudo funciona normal agora :expressionless:

J
JCorcoran

Aff

Criado 26 de maio de 2018
Ultima resposta 26 de mai. de 2018
Respostas 2
Participantes 2

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