Name: rm29839 Date: 06/12/98


Hi. I'm running jdk1.2beta3 on Solaris 2.5.1 on a Sparc machine.
I found this problem when running Source 3.22 on page 160 in the
Wiley book "Java 1.2 and Javascript for C and C++ Programmers."
In the beta JDK, the finalize() method doesnt run when I call
System.runFinalization(), but it does in JDK 1.1.5.

Here is the code:
// tstFinalize.java
 
package jwiley.chp3;
 
class simpleObject2
{
  int a = 5;
 
  void setA(int inA) {
    System.out.println("Setting data member");
    a = inA;
  }
 
  protected void finalize() {
    System.out.println("Finalizing simpleObject");
    a = 0;
  }
}
 
class tstFinalize
{
  public static void main(String args[]) {
    simpleObject2 myObject = new simpleObject2();
 
    myObject.setA(100);
    myObject = null;
    System.out.println("Garbage collecting");
    System.gc();
    System.out.println("Finalizing");
    System.runFinalization();
  }
}

In both cases I compiled the code with the JDK 1.2.beta3 version
of javac. When I enter "java jwiley.chp3.tstNative" to run with
the beta JVM, I get:
Setting data member
Garbage collecting
Finalizing

When I run the same class file with the JDK 1.1.5 version of
"java" I get:
Setting data member
Garbage collecting
Finalizing
Finalizing simpleObject
(Review ID: 33561)
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