I am looking for away to change the text color of all my JLabel
s with a function so I don´t have to use the setForegroundColor
for each and every one of them.
I currently have a bunch of JLabel
s in a panel called Main
. I did a bit of research and came across the instanceof
and getComponents
method. So I've come this far:
main = new JPanel();
main.setBackground(Color.red);
tf_search = createTF();
l_name1 = new JLabel("Name: "+ DB.findUser(1001).returnName());
l_nick = new JLabel("Nick: " + DB.findUser(1001).returnNick());
l_style = new JLabel("Style: ");
l_styleshow = new JLabel(DB.findUser(1001).returnStyle());
l_music = new JLabel("Favourite songs: ");
l_musicshow1 = new JLabel(DB.findUser(1001).returnMusic1());
l_musicshow2 = new JLabel(DB.findUser(1001).returnMusic2());
l_musicshow3 = new JLabel(DB.findUser(1001).returnMusic3());
l_blank = new JLabel("");
l_blank2 = new JLabel("");
l_inst = new JLabel("Instrument: ");
l_instshow = new JLabel(DB.findUser(1001).returnInst());
l_band = new JLabel("Band: ");
l_bandshow = new JLabel(DB.findUser(1001).returnBand());
b_search = new JButton("Sök");
b_musicchn = new JButton("Edit Profile");
b_return = new JButton("Return to profile");
main.setLayout(new GridLayout(9,2));
main.add(l_name1);
main.add(l_nick);
main.add(l_style);
main.add(l_styleshow);
main.add(l_music);
main.add(l_musicshow1);
main.add(l_blank);
main.add(l_musicshow2);
main.add(l_blank2);
main.add(l_musicshow3);
main.add(l_band);
main.add(l_bandshow);
main.add(l_inst);
main.add(l_instshow);
main.add(b_search);
b_search.addActionListener(new searchHandler());
main.add(b_musicchn);
b_musicchn.addActionListener(new editHandler());
main.add(tf_search);
main.add(b_return);
b_return.addActionListener(new returnHandler());
And all the Panels and stuff are declared, or what to call it. ex "private JLabel l_nick, etc"
So I thought this might select all JLabels
and turn the text to white, but my code doesn't work hehe. Is this a legit way of doing things and can you correct it, or does someone know another way. Thanks in advance!
Note: I am a student and this is for my final project in my first programming year, so I just want the code variety. If it is not possible with a massive, advanced block of code don't bother typing it out, even though your help is appreciated!
don't do this:
main.getComponents(l_label instanceof JLabel).setForegroundColor(Color.White);
instead define a List<JLabel> mylabels = ...
populate the list:
myLabels.add(l_label);
myLabels.add(l_label2);
myLabels.add(l_label3);
and do a for enhanced
for(JLabel x:myLabels){
x.setForegroundColor(Color.White);
}
You may retrieve all child components, check if they are JLabel
, and set the color accordingly .
for (Component component : panel.getComponents()) {
if (component instanceof JLabel) {
component.setForeground(Color.WHITE);
}
}
I don't know of a method getComponents
that takes a filter argument. But you could use streams to filter. Something like this:
Stream.of(main.getComponents()).filter(component -> component instanceOf JLabel).forEach(label -> ((JLabel)label).setForegroundColor(Color.White));
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