为什么我的GUI看起来不对劲？

Question

使用Java中的Mac上的Netbeans GUI构建器构建.

这就是Netbeans中GUI的样子:

当我点击预览时,它看起来并不太糟糕,但有一些小变化:

最后,当我运行它时,它看起来像这样: - 太可怕了

我认为这与Java的"外观和感觉"有关.我试过删除它,GUI变得一团糟.那么我的选择是什么？正如你可以看到Netbeans中的所有内容一样,当我运行它时,一切都很糟糕.

有任何想法吗？花了一天时间搞乱了这一点,我至少可以说

Answer 1

从它的外观来看,Netbeans中的预览使用的是与Java在运行应用程序时使用的外观不同的外观.
但是,您可以尝试手动设置所需的外观.Oracle提供了一个关于如何获取和设置外观的教程.

Answer 2

在你编码的某些地方,Netbeans会创建一个main方法(这将在Netbeans执行的类中,并且可能是你的主框架 - 我认为这将是SPPMainGUI)

它看起来像这样(注意它可能是"折叠"所以你只会看到第一个注释和decs第二个注释(Look and feel setting code (optional)))

/* 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(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
    java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
    java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
    java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>

通过点击在边缘的小+展开代码块,更换for-loop有UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());如下

/* 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 {
    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException ex) {
    java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
    java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
    java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
    java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>

当afsantos发现问题时,如果你能接受他的答案是正确的(并且反而投票给我),我会赞美它,轻推,轻推,眨眼,眨眼,不再说了)