javax.swing Class JPasswordField

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javax.swing Class JPasswordField
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• public class JPasswordField
• extends JTextField
• JPasswordField is a lightweight component that
  allows the editing of a single line of text where
  the view indicates something was typed, but does
  not show the original characters.

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• char getPassword()
• Returns the text contained in this TextComponent.

private JPasswordField jPasswordField1 new
JPasswordField() jPasswordField1.setBounds(new
Rectangle(145, 120, 160, 25)) ...................
.......... String bnew String(jPasswordField1.ge
tPassword()) System.out.println(b)
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Login Frame
JFrame frame new Frame1(username,password)
public Frame1(String a, String b)
usernamea passwordb try
jbInit() catch (Exception e)
e.printStackTrace()
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java.sql

• prepareStatement

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prepareStatementPreparedStatement
prepareStatement(String sql) throws
SQLException

• Creates a PreparedStatement object for sending
  parameterized SQL statements to the database. A
  SQL statement with or without IN parameters can
  be pre-compiled and stored in a PreparedStatement
  object. This object can then be used to
  efficiently execute this statement multiple
  times.
• Note This method is optimized for handling
  parametric SQL statements that benefit from
  precompilation. If the driver supports
  precompilation, the method prepareStatement will
  send the statement to the database for
  precompilation. Some drivers may not support
  precompilation. In this case, the statement may
  not be sent to the database until the
  PreparedStatement object is executed. This has no
  direct effect on users however, it does affect
  which methods throw certain SQLException objects.
  
• Result sets created using the returned
  PreparedStatement object will by default be type
  TYPE_FORWARD_ONLY

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