In the frame, you can use the JLabel object to display plain text. Example:
JFrame f=new JFrame("Login");//creating instance of JFrame
JLabel l1,l2;
l1=new JLabel("Username");
l1.setBounds(30,15, 100,30);
l2=new JLabel("Password");
l2.setBounds(30,50, 100,30);
f.add(l1); f.add(l2);