首页 > 解决方案 > 为什么线程“AWT-EventQueue-0”java.lang.Error 发生异常?

问题描述

由于我是 java 新手,我无法弄清楚为什么会发生此错误以及如何解决它。

/*
 * 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 Code;

import javax.swing.JTable;

/**
 *
 * @author Regan
 */
public class Report extends javax.swing.JFrame {

    /**
     * Creates new form Report
     */
    public Report() {
        initComponents();
       for(int i=0;i<Auditor.report.size();i++)
    System.out.println(Auditor.report.get(i));
        String column[]={"Fragment ID","Status"};  
        String[][] data=new String[Auditor.report.size()+1][2]; 
        data[0][0]="Fragment ID";
        data[0][1]="Status";
         for(int i=0;i<Auditor.report.size();i++)
            for(int j=0;j<Auditor.report.get(i).size();j++)
                data[i+1][j]=Auditor.report.get(i).get(j);
        JTable jt=new JTable(data,column);    
    jt.setBounds(30,40,200,300);
    jPanel1.add(jt);
    }

    /**
     * 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")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        jLabel1 = new javax.swing.JLabel();
        jPanel1 = new javax.swing.JPanel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        getContentPane().setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());

        jLabel1.setFont(new java.awt.Font("Lucida Bright", 1, 36)); // NOI18N
        jLabel1.setForeground(new java.awt.Color(169, 11, 63));
        jLabel1.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        jLabel1.setText("AUDITING REPORT");
        getContentPane().add(jLabel1, new org.netbeans.lib.awtextra.AbsoluteConstraints(0, 0, 500, 50));

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 470, Short.MAX_VALUE)
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 390, Short.MAX_VALUE)
        );

        getContentPane().add(jPanel1, new org.netbeans.lib.awtextra.AbsoluteConstraints(10, 90, 470, 390));

        pack();
    }// </editor-fold>//GEN-END:initComponents

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* 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(Report.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Report.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Report.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Report.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Report().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JLabel jLabel1;
    private javax.swing.JPanel jPanel1;
    // End of variables declaration//GEN-END:variables
}

上面的代码导致了错误,但我仍然对它是 IDE 错误还是我的代码错误感到困惑。此错误发生在 Visual Studio 代码和 NetBeans 上

  1. a 的可能原因是java.lang.Error: Unresolved compilation problem什么?
  2. IDE是否是唯一的问题?

追溯:

Exception in thread "AWT-EventQueue-0" java.lang.Error: Unresolved compilation problems: 
        org.netbeans cannot be resolved to a type
        org.netbeans cannot be resolved to a type
        org.netbeans cannot be resolved to a type

        at Code.Report.initComponents(Report.java:48)
        at Code.Report.<init>(Report.java:20)
        at Code.Report$1.run(Report.java:102)
        at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:316)
        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$4.run(EventQueue.java:715)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
        at java.base/java.security.ProtectionDomain$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)

任何形式的帮助都值得感谢

标签: javaexceptionnetbeans

解决方案


  1. 问题的可能原因是java.lang.Error: Unresolved compilation error什么?

这意味着您的源代码中某处存在编译错误,并且您尝试在未修复编译错误的情况下运行代码。

异常中的错误消息是说Code.Report类中有错误。显然,代码试图使用包中的某些org.netbeans内容,但编译器不知道该包是什么。我希望根本原因是缺少编译时项目依赖项。

  1. IDE是否是唯一的问题?

并不真地。可能的根本原因是您的项目配置不正确,并且您忽略了 IDE 在您之前构建项目时向您指示的编译错误。

  • 前者可以出现在不同的 IDE 中。除非您正确配置项目依赖项,否则 IDE 无法为编译器提供正确的类路径。
  • 后者是你的错,而不是 IDE 的错。你不应该忽略编译错误。

您的问题中没有足够的上下文来说明实际错误在哪里。但是您应该能够通过清理和构建包并查看它报告的编译错误来找到它。


推荐阅读