How to Perform Multiple Action on Single Click in Java Swing

I have a Question on performing other buttons action with single button click. Some example code for three buttons:

JButton a = new JButton("a");
a.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
    // Action of a is Here                   
  }
});

JButton b = new JButton("b");
b.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
    // Action of b is Here                   
  }
});

Those should come together, like:

JButton c = new JButton("c");
c.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
    // Action of c is Here
    // Action of a 
    // Action of b              
   }
});

In the above example i have three buttons a,b,c with its own action; but as you can see, C also has to run the actions of A and B. What are good ways to address this?