Java add mouseListener and use local variables inside
What I'm trying to do is use local variables inside of the mouseListener I add ( right on that place ). Which seems impossible, so I would like to ask if there's any alternative way for what I'm trying to do.
So basicly the problem is: I cannot use local variables ( which in my case contain info about the product clicked on by the user ) inside a mouseListener I add dynamicly.
This is the code it's about:
public void mouseClicked(MouseEvent e) {
//when user clicks on a label of a product
//then add it to the cart_products panel (label)
//also add a mouseListener to the label for the cart_products
//so that it can be removed from the cart 开发者_运维知识库again when right-mouse clicked on the label
//a = shop_id, index[0] = category_id, index[1] = product_id
JLabel label = (JLabel)e.getSource(); //the label clicked on (product)
int[] index = getProductIndex(label.getText()); //gets the indexes of the product clicked on
cart_products[a][index[0]][index[1]] = new JLabel("1x ("+current+") "+product_prices[a][index[0]][index[1]]+" Euro - "+label.getText());
//create a new label inside the shopping cart for the product clicked on
//to 'add it to the shopping cart'
###################### NOT WORKING START ######################
//add a mouseListener to the new product label inside the shopping cart
//to make a right-mouse click on the product label, remove the product label
cart_products[a][index[0]][index[1]].addMouseListener(new MouseListener() {
public void mouseClicked(MouseEvent e) {
if(SwingUtilities.isRightMouseButton(e)){
removeCartProduct(a, index[0], index[1]); //<!--- cannot use these local variables
}
}
}
###################### NOT WORKING END ######################
}
It's part of a big code so unfortunately I cannot post a full SSCCE with a compile- & execute-ready code. So I tried to just offer the code part that isn't working properly ( which I'm sure it only is this part marked with #s ). Anyway I hope one can give a solution for my problem.
Thanks in advance!
Best Regards, Skyfe.
You can use local variables declared as final
: final int[] index = getProductIndex...
and the same for a
.
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