How to set color for text in java.

[mybm1]

private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {

   filepath ="/home/GUI/Language\_Independent/Output/Frame\_1.txt";
   file =new File(filepath);
   fileContents="";

try
     {
         br = new BufferedReader(new FileReader(filepath));
   
     }
     catch(Exception E)
     {
       jLabel1.setText(E.toString());
       
     }

try
     {
         while((fileContents= br.readLine())!=null)
         {
             System.out.println("fileContents");
             jLabel1.setText(fileContents);
             
             
             String str = "a";
      
        while(br.readLine()== str) {
           
         jLabel1.setForeground(Color.red);
        }
         }
         br.close();
     }
     catch(Exception E1)
     {
         jLabel1.setText(E1.toString());
     }    
    

    
    
// TODO add your handling code here:
}         

Frame_1 consist of generate text eg:abcdefgh..
for this generated file i want to set color for specific char eg a=red so on.
jLabel1.setForeground(Color.red);
is not working at all.Please someone suggest and thnks in advanced

[Lost User]

Your test in the sub loop probably never yields true. Have you stepped through your code with the debugger?

[mybm1]

ya i also observed it is not going inside the loop condition is not satisfied but i can solved it out is my logic wrong ?

[Lost User]

Your logic does not make much sense. You read a line from the file, then you are trying to use a while loop to read another line of text and compare it with the string a. You should read a line and then test if it contains the character you are looking for. However, note that you cannot set different characters to different colours. You can only use a single colour for the entire label.