java - 错误 :Kotlin:Out-projected type 'JComboBox<*>' prohibits the use of '@BeanProperty public open fun setModel(p0: ComboBoxModel<E! >!)

Question

我是 Kotlin 新手，正在将一些 Java 代码翻译成它。

我想出的代码是:

val comboBox: JComboBox<*> = JComboBox<Any?>()
        comboBox.font = Font("苹方", Font.PLAIN, 15)
        comboBox.setModel(DefaultComboBoxModel<Any?>(s))   /*
error:Out-projected type 'JComboBox<*>' prohibits the use of '@BeanProperty public open fun setModel(p0: ComboBoxModel<E!>!): Unit defined in javax.swing.JComboBox'
*/
       comboBox.setBounds(341, 73, 170, 28)
        panel.add(comboBox)

但我收到以下错误:

Error:Kotlin:Out-projected type 'JComboBox<*>' prohibits the use of '@BeanProperty public open fun setModel(p0: ComboBoxModel<E!>!)

我做错了什么？

为了完整起见，这是我原来的java代码:

JComboBox comboBox = new JComboBox();
        comboBox.setFont(new Font("苹方", Font.PLAIN, 15));
        comboBox.setModel(new DefaultComboBoxModel(s));
        comboBox.setBounds(341, 73, 170, 28);
        panel.add(comboBox);

Answer 1

之前的代码:

val comboBox: JComboBox<*> = JComboBox<Any?>()

应更改为:

val comboBox = JComboBox<Any?>()