Object Oriented and Concurrent Programming in Java

[ an obj | an obj with d.b. | six objs | six objs with d.b. | sync. vs async. | Bounded buffer | Japanese ]
Java applets no longer run in any browser (since 2017).
Two working versions are available: the original 1998 .class files executed by a JVM written in JavaScript (Japanese page), and a JavaScript rewrite. Source files open in a black-background viewer.
(The first two thumbnails were stored as all-zero bytes and could not be recovered; they have been re-rendered by running the original 1998 bytecode.)

o Rotating an object

This 3D object is created directly using simple classes.
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  2. Sample.html
  3. Sample.java
  4. WireFrame.java
  5. FreeSoR.java

In the next version, it can be processed using the double bufferings, then you can see it smoothly.

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  2. Sample05.html
  3. Sample05.java

o Rotating objects

These 3D objects are created and executed concurrently. We create six objects on the screen.
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  2. Sample1.html
  3. Sample1.java
  4. TR.java
The same additional bufferings are processed above programs.
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  2. Sample15.html
  3. Sample15.java

o Synchronous v.s. Asynchronous

Using semaphores, it can be controled and changed its status by a button `Sync'. This version already includes the mechanism of double bufferings.
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  2. Sample2.html
  3. Sample2.java

o Bounded Buffers

This applet emulates a bounded buffer. At first, the following one does not include double bufferings.
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  2. Sample3.html
  3. Sample3.java
The other version of bounded buffer.
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  2. Sample4.html
  3. Sample4.java
[ an obj | an obj with d.b. | six objs | six objs with d.b. | sync. vs async. | Bounded buffer | Japanese ]