java - 无法在我的自定义 jdialog 中更改 jseparator 的背景前景色

Question

我在自定义 jdialog 中使用 JSeparator

这是我的代码:

public class CheckDialog extends javax.swing.JDialog {
    private boolean setuju =false;

    public CheckDialog(java.awt.Frame parent, boolean modal) {
        super(parent, modal);
        initComponents();
        JSeparator jSeparator4 = new JSeparator(SwingConstants.HORIZONTAL);
        JSeparator jSeparator6 = new JSeparator(SwingConstants.HORIZONTAL);
        JSeparator jSeparator7 = new JSeparator(SwingConstants.HORIZONTAL);
        jSeparator4.setBackground(new java.awt.Color(0, 0, 51));
        jSeparator4.setForeground(new java.awt.Color(0, 0, 51));
        jPanel2.add(jSeparator4, new org.netbeans.lib.awtextra.AbsoluteConstraints(0, 10, 280, 10));
        jSeparator6.setBackground(new java.awt.Color(0, 0, 51));
        jSeparator6.setForeground(new java.awt.Color(0, 0, 51));
        jPanel10.add(jSeparator6, new org.netbeans.lib.awtextra.AbsoluteConstraints(0, 10, 40, 10));
        jSeparator7.setBackground(new java.awt.Color(0, 0, 51));
        jSeparator7.setForeground(new java.awt.Color(0, 0, 51));
        jPanel1.add(jSeparator7, new   org.netbeans.lib.awtextra.AbsoluteConstraints(0, 10, 110, 10));
    }

    public boolean showDialog() {
        this.setUndecorated(true);
        this.pack();
        this.setBackground(new Color(0,0,0,0));
        this.setLocationRelativeTo(null);
        this.setVisible(true);
        return setuju;
    }
}

我预计分隔符颜色应为 (0, 0, 51)，但分隔符保留其默认颜色，例如 (212, 212, 212)。

Answer 1

发生这种情况是因为我忘记在我的类中设置Look-and-Feel

感谢@SergiyMedvynskyy