okbtn.addActionListener(e -> { String name = nameField.getText(); String sex = malebtn.isSelected() ? "男" : "女"; String department = (String) departmentField.getSelectedItem(); ArrayList<String> hobby = new ArrayList<>(); if (hobby1.isSelected()) hobby.add("做饭"); if (hobby2.isSelected()) hobby.add("阅读"); if (hobby3.isSelected()) hobby.add("睡觉"); String phone = phoneField.getText(); String resume = resumeField.getText(); String infoName = "my name\t\t" + name; String infoSex = "sex\t\t" + sex; String infoDepartment = "department\t" + department; String infohobby = "hobby\t\t" + hobby; String infophone = "phoneNo\t\t" + phone; String inforesume = "resume\n" + resume; String all = infoName + "\n" + infoSex + "\n" + infoDepartment + "\n" + infohobby + "\n" + infophone + "\n" + inforesume; JLabel information = new JLabel(); scrollPane.add(information); panel_3.add(information); information.setText(all); System.out.println(all); });优化代码，使得在文本框输出

all 变量的内容。修改后的代码如下：

okbtn.addActionListener(e -> {
    String name = nameField.getText();
    String sex = malebtn.isSelected() ? "男" : "女";
    String department = (String) departmentField.getSelectedItem();
    ArrayList<String> hobby = new ArrayList<>();
    if (hobby1.isSelected())
        hobby.add("做饭");
    if (hobby2.isSelected())
        hobby.add("阅读");
    if (hobby3.isSelected())
        hobby.add("睡觉");
    String phone = phoneField.getText();
    String resume = resumeField.getText();
    String infoName = "my name\t\t" + name;
    String infoSex = "sex\t\t" + sex;
    String infoDepartment = "department\t" + department;
    String infohobby = "hobby\t\t" + hobby;
    String infophone = "phoneNo\t\t" + phone;
    String inforesume = "resume\n" + resume;
    String all = infoName + "\n" + infoSex + "\n" + infoDepartment + "\n" + infohobby + "\n" + infophone + "\n" 
        + inforesume;
    textArea.setText(all);  // 将 all 的内容输出到文本框
});