Coloco uma imagem no JFrame e para de compilar

Gabriel_Hakozaki · Novembro 23, 2020, 3:18am

Eu compilo o código da “BUILD SUCESS” e não aparece a tela e eu retiro a imagem e volta a funcionar

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at java.desktop/javax.swing.ImageIcon.<init>(ImageIcon.java:217)
	at br.com.unissales.TesteTrabalho.visao.FrmTelaPrincipal.initComponents(FrmTelaPrincipal.java:94)
	at br.com.unissales.TesteTrabalho.visao.FrmTelaPrincipal.<init>(FrmTelaPrincipal.java:21)
	at br.com.unissales.TesteTrabalho.visao.FrmTelaPrincipal$6.run(FrmTelaPrincipal.java:186)
	at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:770)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:740)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
------------------------------------------------------------------------
BUILD SUCCESS

rodriguesabner · Novembro 23, 2020, 3:24am

provavelmente o path está errado, mostra o codigo e tambem o caminho dessa img ai

Gabriel_Hakozaki · Novembro 23, 2020, 3:39am

/*

To change this license header, choose License Headers in Project Properties.
To change this template file, choose Tools | Templates
and open the template in the editor.
*/
package br.com.unissales.TesteTrabalho.visao;

import java.awt.Toolkit;

/**
*

@author Gamer
*/
public class FrmTelaPrincipal extends javax.swing.JFrame {

/**
- Creates new form FrmTelaPrincipal
  */
  public FrmTelaPrincipal() {
  initComponents();
  setIcon();
  }
/**
- This method is called from within the constructor to initialize the form.
- WARNING: Do NOT modify this code. The content of this method is always
- regenerated by the Form Editor.
  */
  @SuppressWarnings(“unchecked”)
  //
  private void initComponents() {
  
  jButton1 = new javax.swing.JButton();
  jButton2 = new javax.swing.JButton();
  jButton4 = new javax.swing.JButton();
  jButton3 = new javax.swing.JButton();
  jLabel1 = new javax.swing.JLabel();
  
  setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
  setTitle(“ADM”);
  setBackground(new java.awt.Color(203, 202, 199));
  
  jButton1.setBackground(new java.awt.Color(52, 175, 35));
  jButton1.setFont(new java.awt.Font(“Tahoma”, 1, 12)); // NOI18N
  jButton1.setText(" Cadastro de Clientes");
  jButton1.setToolTipText("");
  jButton1.setBorderPainted(false);
  jButton1.setHorizontalTextPosition(javax.swing.SwingConstants.RIGHT);
  jButton1.addMouseListener(new java.awt.event.MouseAdapter() {
  public void mouseClicked(java.awt.event.MouseEvent evt) {
  jButton1MouseClicked(evt);
  }
  });
  jButton1.addActionListener(new java.awt.event.ActionListener() {
  public void actionPerformed(java.awt.event.ActionEvent evt) {
  jButton1ActionPerformed(evt);
  }
  });
  
  jButton2.setBackground(new java.awt.Color(52, 175, 35));
  jButton2.setFont(new java.awt.Font(“Tahoma”, 1, 12)); // NOI18N
  jButton2.setText(“Cadastro de Produtos”);
  jButton2.setBorderPainted(false);
  jButton2.setHorizontalTextPosition(javax.swing.SwingConstants.RIGHT);
  jButton2.addActionListener(new java.awt.event.ActionListener() {
  public void actionPerformed(java.awt.event.ActionEvent evt) {
  jButton2ActionPerformed(evt);
  }
  });
  
  jButton4.setBackground(new java.awt.Color(52, 175, 35));
  jButton4.setFont(new java.awt.Font(“Tahoma”, 1, 12)); // NOI18N
  jButton4.setText(" Pedidos");
  jButton4.setToolTipText("");
  jButton4.setBorderPainted(false);
  jButton4.setHorizontalTextPosition(javax.swing.SwingConstants.RIGHT);
  jButton4.addActionListener(new java.awt.event.ActionListener() {
  public void actionPerformed(java.awt.event.ActionEvent evt) {
  jButton4ActionPerformed(evt);
  }
  });
  
  jButton3.setBackground(new java.awt.Color(52, 175, 35));
  jButton3.setFont(new java.awt.Font(“Tahoma”, 1, 12)); // NOI18N
  jButton3.setText(“Gestão de Funcionários”);
  jButton3.setBorderPainted(false);
  jButton3.addActionListener(new java.awt.event.ActionListener() {
  public void actionPerformed(java.awt.event.ActionEvent evt) {
  jButton3ActionPerformed(evt);
  }
  });
  
  jLabel1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/br/com/unissales/TesteTrabalho/visao/icon/logo_green_food.png"))); // NOI18N
  
  javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
  getContentPane().setLayout(layout);
  layout.setHorizontalGroup(
  layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
  .addGroup(layout.createSequentialGroup()
  .addContainerGap()
  .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
  .addComponent(jButton2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
  .addComponent(jButton1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
  .addComponent(jButton4, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
  .addComponent(jButton3, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 495, Short.MAX_VALUE))
  .addContainerGap())
  .addGroup(layout.createSequentialGroup()
  .addGap(148, 148, 148)
  .addComponent(jLabel1)
  .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
  );
  layout.setVerticalGroup(
  layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
  .addGroup(layout.createSequentialGroup()
  .addContainerGap()
  .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 80, javax.swing.GroupLayout.PREFERRED_SIZE)
  .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
  .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 81, javax.swing.GroupLayout.PREFERRED_SIZE)
  .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
  .addComponent(jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 83, javax.swing.GroupLayout.PREFERRED_SIZE)
  .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
  .addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 84, javax.swing.GroupLayout.PREFERRED_SIZE)
  .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
  .addComponent(jLabel1)
  .addContainerGap())
  );
  
  layout.linkSize(javax.swing.SwingConstants.VERTICAL, new java.awt.Component[] {jButton1, jButton2, jButton4});
  
  pack();
  setLocationRelativeTo(null);
  }//
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
new FrmClientes((this), true).setVisible(true);
}

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
new FrmProdutos((this), true).setVisible(true);
}

private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {
new FrmPedidos((this), true).setVisible(true);
}

private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
```
 new FrmFuncionarios((this), true).setVisible(true);
```
}

private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
}

/**
- @param args the command line arguments
  /
  public static void main(String args[]) {
  / Set the Nimbus look and feel /
  //
  / If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
  - For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
    */
    try {
    for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
    if (“Nimbus”.equals(info.getName())) {
    javax.swing.UIManager.setLookAndFeel(info.getClassName());
    break;
    }
    }
    } catch (ClassNotFoundException ex) {
    java.util.logging.Logger.getLogger(FrmTelaPrincipal.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (InstantiationException ex) {
    java.util.logging.Logger.getLogger(FrmTelaPrincipal.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (IllegalAccessException ex) {
    java.util.logging.Logger.getLogger(FrmTelaPrincipal.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (javax.swing.UnsupportedLookAndFeelException ex) {
    java.util.logging.Logger.getLogger(FrmTelaPrincipal.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    }
    //
  /* Create and display the form */
  java.awt.EventQueue.invokeLater(new Runnable() {
  public void run() {
  new FrmTelaPrincipal().setVisible(true);
  }
  });
  }
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JButton jButton4;
private javax.swing.JLabel jLabel1;
// End of variables declaration

private void setIcon() {
setIconImage(Toolkit.getDefaultToolkit().getImage(getClass().getResource(“icon.png”)));
}
}

o caminho da imagem ta automatico: /br/com/unissales/TesteTrabalho/visao/icon/logo_green_food.png

Coloco uma imagem no JFrame e para de compilar

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