Java Programming by Pearson

324 • Java Programming

Here is what is displayed when this program is run. It is probably not what was expected. Each

name should be enclosed within its own parentheses. The problem with the previous example is that

two threads use the same resource concurrently. The resource is the display() method defi ned in

the Parentheses class. In order to have one thread take control of the display() method, the

display() method must be synchronized. This is done by using the keyword synchronized in

the header of the display() method.

Now simply change the display method by writing synchronized keyword before void

synchronized void display(String ...