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String sentence = "Hello world, this is a sentence";
JPanel displayPanel = new JPanel(new GridLayout());
JTextArea sentenceArea = new JTextArea(sentence);
sentenceArea.setFont(new Font("Arial", Font.PLAIN, fontSize));
sentenceArea.setLineWrap(true);
sentenceArea.setWrapStyleWord(true);
sentenceArea.setEditable(false);
this.displayPanel.add(new JScrollPane(sentenceArea));