英文:
Java Is it possible to get the Variable name of a jButton?
问题
我想不出其他的做法了。我正在尝试获取已经声明的 Java 按钮的变量名，以便我可以循环遍历数据库（该数据库具有一个屏幕字段，用于访问正确的产品），并将所需的文本设置为那个 jButton。我可以通过手动设置每个 jButton 的文本或通过 Netbeans GUI 设置硬编码文本来实现这一点。但我想知道是否有更有效的方法来做到这一点。
# 可以实现这个的代码 #
ArrayList<Products> myList = myProductsDataHandler.getAllProducts();
myList.forEach((var i) -> {
if (i.getScreen() == 0) {
btnProduct1.setText(i.getProductName());
} else if (i.getScreen() == 1) {
btnProduct2.setText(i.getProductName());
} else if (i.getScreen() == 2) {
btnProduct3.setText(i.getProductName());
} else if (i.getScreen() == 3) {
btnProduct4.setText(i.getProductName());
} else if (i.getScreen() == 4) {
btnProduct5.setText(i.getProductName());
} else if (i.getScreen() == 5) {
btnProduct6.setText(i.getProductName());
} else if (i.getScreen() == 6) {
btnProduct7.setText(i.getProductName());
} else if (i.getScreen() == 7) {
btnProduct8.setText(i.getProductName());
} else if (i.getScreen() == 8) {
btnProduct9.setText(i.getProductName());
}
});
# 我需要帮助的代码 #
int btnInt = 1;
String btnStr = "btnProduct";
btnCatagory1.setText(i.getCategory());
Component[] components = pnlOrder.getComponents();
for (Component component : components) {
if (component instanceof JButton) {
System.out.println(btnStr + btnInt);
JButton button = (JButton) component;
System.out.println(button.getName());
if (button.getName().contains(btnStr + btnInt)) {
btnProduct1.setText(i.getProductName());
btnInt++;
}
}
}
});
这是关于你提供的代码的翻译，只包含了翻译后的内容，没有其他附加内容。如果你还有其他需要翻译的内容或问题，请继续提问。
英文:
I can't come up with any other way of doing this. I'm trying to get the variable name of a java button which I've already declared so I can loop through a Database (Which has a screen field to access the correct product) and set the desired text to that jButton. I can do this by manually setting each jButtons text or setting a hard codded text through the Netbeans GUI. But I was looking to see if there's a more efficient way of doing this.
Code that can achieve this
ArrayList<Products> myList = myProductsDataHandler.getAllProducts();
myList.forEach((var i) ->
{
if (i.getScreen() == 0)
{
btnProduct1.setText(i.getProductName());
}
else if (i.getScreen() == 1)
{
btnProduct2.setText(i.getProductName());
}
else if (i.getScreen() == 2)
{
btnProduct3.setText(i.getProductName());
}
else if (i.getScreen() == 3)
{
btnProduct4.setText(i.getProductName());
}
else if (i.getScreen() == 4)
{
btnProduct5.setText(i.getProductName());
}
else if (i.getScreen() == 5)
{
btnProduct6.setText(i.getProductName());
}
else if (i.getScreen() == 6)
{
btnProduct7.setText(i.getProductName());
}
else if (i.getScreen() == 7)
{
btnProduct8.setText(i.getProductName());
}
else if (i.getScreen() == 8)
{
btnProduct9.setText(i.getProductName());
}
Code I need help with
int btnInt = 1;
String btnStr = "btnProduct";
btnCatagory1.setText(i.getCategory());
Component[] components = pnlOrder.getComponents();
for(Component component : components)
{
if(component instanceof JButton)
{
System.out.println(btnStr+btnInt);
JButton button = (JButton) component;
System.out.println(button.getName());
if (button.getName().contains(btnStr+btnInt))
{
btnProduct1.setText(i.getProductName());
btnInt++;
}
}
}
});
It's an Epos system and when the program is executed I want to get texts from the Database and set it to desired buttons. There are only 9 buttons. I have tried getName() but it returns null. Is there any other I can achieve this. Thanks
答案1
得分: 2
当您创建按钮时，还可以将每个按钮添加到一个ArrayList中：
List<JButton> buttons = new ArrayList<JButton>();
buttons.add(btnProduct1);
buttons.add(btnProduct2);
然后，当您想要更新按钮上的文本时，只需使用以下代码：
JButton button = buttons.get(i.getScreen());
button.setText(i.getProductName());
英文:
When you create your buttons you can also add each button to an ArrayList:
List<JButton> buttons = new ArrayList<JButton>();
buttons.add(btnProduct1);
buttons.add(btnProduct2);
Then when you want to update the text on the button you simply use:
JButton button = buttons.get( i.getScreen() );
button.setText( i.getProductName() );
答案2
得分: 1
你使用了setText()，因此应该使用getText()。
如果你使用了setName()，你将会使用getName()。
https://docs.oracle.com/javase/1.5.0/docs/api/javax/swing/AbstractButton.html#getText()
英文:
You used setText() therefore should be using getText().
Had you used setName() you would use getName().
https://docs.oracle.com/javase/1.5.0/docs/api/javax/swing/AbstractButton.html#getText()
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