在方法内编辑JLabel文本

Question

I've created a ScorePlayer class which extends JPanel and added a JLabel score in the constructor.

Now I want to edit the Text of the Label in a method of the same class but I am not really sure how to do it. Do I have to create an Instance of the Object like ScorePlayer scorePlayer = new ScorePlayer(); inside of the method?

EDIT First of all, thanks for your help. I've just created a local variable for the Label in my Constructor like:

ScorePlayer(String playerName) {
    setLayout(new GridBagLayout());
    GridBagConstraints gbc = new GridBagConstraints();
    gbc.gridx = 0;
    gbc.gridy = 1;
    setPreferredSize(new Dimension(Var.scoreBoardWidth, 200));
    JLabel player = new JLabel();
    player.setFont(new Font("Arial", 0, 32));
    JLabel score = new JLabel(); 
    score.setFont(new Font("Arial", 0, 32)); 
    score.setText(Integer.toString(spielStand));
    add(player, gbc);
    gbc.gridy = 2;
    add(score, gbc);
}

Now, I just made JLabel score global like:

JLabel score = new JLabel();
ScorePlayer() {
 //CODE
}

It was just a silly beginner's mistake.

Answer 1

From your question i understand that you will need to add a instance of a JLabel and after this your class will look like this

public class ScorePlayer {
      private JLabel labelOne;

 public ScorePlayer (JLabel label){
         this.labelOne = label;
   }//this is where you initialize a JLabel object

after you add those lines of code you have to add method setLabel like this

public void setLabel(String label){
    labelOne.setText(label);
 }// this is inside your ScorePlayer class

I hope this will help you.