如何在 jLabel 中应用新行？

Question

我想使用 jLabel 在多行中显示数据库中的值。我尝试使用 html 技巧，但我不知道如何在我的代码中应用它。我只是得到错误。也许我做错了。哈哈

     try{
            //display doctor's name by selected classification
            String url = "jdbc:mysql://localhost/sched";
            Connection conn = DriverManager.getConnection(url,"root","");
            Statement stmt = conn.createStatement();
            String classification = comboClass.getSelectedItem().toString();
            String sqlSelect= "select * from doctorsched where class = '"+classification+"'";
            ResultSet rs = stmt.executeQuery(sqlSelect); 
            String finalText ="";
        while(rs.next()){
             String docsName= rs.getString("docName");
             String room = rs.getString("room");
             String days = rs.getString("day");
             String from = rs.getString("timefrom");
             String to = rs.getString("timeto");
             
             finalText += docsName+" (room "+room+", "+days+", "+from+"-"+to+") \n";
             // i want to display values from database in many lines but using jLabel
             
        }
        jLabel10.setText(finalText);
      
} catch (Exception ex) {
  
    Logger.getLogger(home.class.getName()).log(Level.SEVERE, null, ex);
}

我的输出应该是这样的

doc riza (room 104, Every Thursday, 10:30AM-10:00AM)
doc j (room 101, null, 10:30AM-11:30AM)
doc lea (room 102, Every Saturday, 10:30AM-4:30PM)
frida (room 101, null, 8:00AM-9:30AM)

请帮帮我:( '\n' 在 jTextArea 中有效，但在 jLabel 中无效。我也在标签中尝试了'\n'，但也不起作用。

好的，我试了这个

finalText += "<html>"+docsName+" (room "+room+", "+days+", "+from+"-"+to+")<br></html>";

但是这段代码只显示一行。我数据库中的第一行。我需要显示所有行。

现在，下一段代码显示了所有内容，但下一行仍然不起作用。

while(rs.next()){
             String docsName= rs.getString("docName");
             String room = rs.getString("room");
             String days = rs.getString("day");
             String from = rs.getString("timefrom");
             String to = rs.getString("timeto");
             
             finalText += docsName+" (room "+room+", "+days+", "+from+"-"+to+")\n";
        }
        jLabel10.setText("<html>"+finalText+"<br></html>");
}

为什么

Answer 1

使用这样的代码

String finalText = "";
for (int i = 0; i < 10; i++) {
    finalText += "line:" + i;
    finalText += "<br>";
}
label.setText("<html>" + finalText + "</html>");

Answer 2

 try{
            //display doctor's name by selected classification
            String url = "jdbc:mysql://localhost/sched";
            Connection conn = DriverManager.getConnection(url,"root","");
            Statement stmt = conn.createStatement();
            String classification = comboClass.getSelectedItem().toString();
            String sqlSelect= "select * from doctorsched where class = '"+classification+"'";
            ResultSet rs = stmt.executeQuery(sqlSelect); 
            String finalText ="";

        while(rs.next()){
             String docsName= rs.getString("docName");
             String room = rs.getString("room");
             String days = rs.getString("day");
             String from = rs.getString("timefrom");
             String to = rs.getString("timeto");

             finalText += (docsName+" (room "+room+", "+days+", "+from+"-"+to+")\n") ;
             finalText += "<br>";
               
        }
         jLabel10.setText("<html>" + finalText + "</html>");

} catch (Exception ex) {
  
    Logger.getLogger(home.class.getName()).log(Level.SEVERE, null, ex);
}

如何在 jLabel 中应用新行？

How can I apply new line in jLabel?

java

mysql

swing

newline

jlabel