You might know that Java passes by value, but it helps to understand why. Here's what happens when you pass mutable and immutable object references in Java.

Within the deposit thread’s critical code section, that thread assigns the Deposit String object’s reference to shared variable transName and assigns 2000.0 to shared variable amount.

String s1 = new String("Hello world!"); That code will create an s1 string object and a reference variable. As noted, Java strings are immutable. Once created, a string using string class cannot be ...