How do I set the color of a JLabel using Java?

问题

I will be creating multiple Jlabel components upon a JButton click. I know how to create a label and set text inside but I want this label to have a color.

I only know how to change the color of a label if it has a name but an important part of my program is when I declare the labels, I don't have names for them as shown in the code below:

newPanel.add(new JLabel("jlabel text"), g);

How can I set the color of the label?

回答1:

yourLabel.setForeground(new java.awt.Color(r,g,b);

回答2:

I don't have names for them as shown in the code below:

newPanel.add(new JLabel("jlabel text"), g);

So give the label a name:

JLabel label = new JLabel("label text");
label.setOpaque( true );
label.setBackground( Color.RED );
newPanel.add(label, g);

回答3:

You should assign the label to a variable so that you can perform additional operations on it:

JLabel myLabel = new JLabel("jlabel text");
myLabel.setForeground(new java.awt.Color.RED);
newPanel.add(myLabel);

Now place this code in a function, such as an event handler for your button. Each time you click the button it creates a new JLabel. The name myLabel only refers to the current one that is being created. So yes, you can reuse the same name to refer to a different JLabel object. At a given moment, the name can only refer to one JLabel at a time.

来源：https://stackoverflow.com/questions/54294318/how-do-i-set-the-color-of-a-jlabel-using-java