Swing interfaces should be constructed and shown from the Swing event dispatch thread. Doing so from any other thread, such as from ``++main++`` risks deadlocks since you run the risk of multiple threads accessing things which are inherently not thread-safe.


Instead, use ``++SwingUtilities.invokeLater++`` or ``++SwingUtilities.invokeAndWait++`` to kick off a ``++new Runnable++`` that handles your GUI creation.

== Noncompliant Code Example

----
public static void main(String args[]) {
  makeGui(); // Noncompliant
}

public void makeGui() {
  JFrame frame = new JFrame();
  // ...
  frame.show();
}
----

== Compliant Solution

----
public static void main(String args[]) {
  SwingUtilities.invokeAndWait(new Runnable() {
    public void run() {
      makeGui();
    }
  }
}

public void makeGui() {
  JFrame frame = new JFrame();
  // ...
  frame.show();
}
----
