Matt Cartwright

welcome to the ranch

what about writing the classic "hello world!" program, then write a class HelloWorld and instantiate it from another one (your controller)?
Then write a class HelloNatalie that inherits HelloWorld, have a look at shadowing and overloading...
Write an interface Animal and classes like Cat and Dog, create collections of animals (lists, arrays etc) of animals, give them attributes like 'likes milk', use iterators in loops to make them all meow and bark, select only those that like milk etc.

Have a closer look at Java AWT and Swing graphic APIs and create a new window (JFrame) with some area to host your game, the board (JPanel or Canvas).
Draw a circle on that board. Have look at the APIs default passive rendering (paintComponent()) and learn a bit about active rendering.
Introduce a timer and have that circle moving from left to right. When you can do that, make it bounce back from the left and right (boundary detection).
Then introduce angles and have that circle bounce back from top and bottom of your board, make it disappear when going over left and right boundaries...
Have a closer look at KeyListener and/or KeyAdapter and draw two rectangles, one left one right on your board.
Control them with your keyboard (up and down with boundary detection at top and bottom) and make the circle bounce back from the rectangles (collision detection).

Enjoy playing Pong!

Don't start with making it look nice until it does what you think it should be doing. Once it works, learn how to load images etc. Introduce a high score list, store that in a text file or embedded database.... Make your game configurable.
Then have a great idea, get the basic shapes moving (circles and rectangles), make boundary checking and collisions work, make it look nice and earn a lot of money
HTH
Matt

@Dave
that is correct,

@Override public void actionPerformed( ActionEvent e ) { // whenever the timer calls this method this.saucer.move(); ... }
is called by the timer and in the Sprite's move() method we do the boundary checking after adding the deltas from key events..

@Alaric
there were key events (q &e) defined for the saucer, that's what I implemented....
just take it as an example and use it for your laser cannon.
The saucer isn't visible in the beginning of the game and scrolls from left (off) to right off.
So the minX for it would need to be adjusted for that.
Why not have a counter incremented in in actionPerformed() that triggers the appearance of the saucer?
I think you got the idea...

HTH
Matt

hmm, the saucer works on my machine

package jforumanimationjunk; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; // import java.awt.event.KeyListener; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; import javax.swing.*; /** * * @author mustoeal */ public class JForumAnimationJunk implements ActionListener // , KeyListener { static final int FPS = 60; // need for speed :D static final int TIMER = 1000 / FPS; static final int P_WIDTH = 500; static final int P_HEIGHT = 500; static final int O_WIDTH = 60; static final int O_HEIGHT = O_WIDTH / 3; int playerx = 400; int playery = 400; int playerbulletx = 200; int playerbullety = 200; int bulletx = 100; int bullety = 100; static boolean playershot = false; int saucerx = 0; int saucery = 0; boolean swoop = true; char key = 'g'; Timer t = null; JFrame f = null; MyJPanel p = null; Enemy[] enemies; private Swoop saucer = null; JForumAnimationJunk() { super(); this.saucer = new Swoop(0, 10, P_WIDTH /* - O_WIDTH */, 10); t = new Timer(TIMER, this); f = new JFrame(); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.setTitle("SpaceInvaders"); p = new MyJPanel(); f.add(p); // f.addKeyListener(this); f.addKeyListener(new MyKeyListener()); System.out.printf("a"); // ActionListener listen = new ActionListener() { enemies = new Enemy[12]; for ( int c = 0; c < enemies.length; c++ ) { if ( c < 6 ) { enemies[c] = new Enemy(50 + ( c * 50 ), 50, "enemy 1.png"); } else { enemies[c] = new Enemy(50 + ( ( c - 6 ) * 50 ), 100, "enemy 1.png"); } } } public void readimage( Graphics g ) { int x = 50; // width of the image int y = 50; // height of the image int startX = 50; int startY = 100; // Barrier[] barriers = new Barrier[3]; // // for (int c = 0; c < barriers.length; c++) { // // } int barx = 30; int bary = 250; int barx1 = 200; int bary1 = 250; int barx2 = 350; int bary2 = 250; for ( int c = 0; c < enemies.length; c++ ) { enemies[c].setPosition(50 * c, 75); } for ( int c = 0; c < enemies.length; c++ ) { drawImage(g, enemies[c].imageName, enemies[c].x, enemies[c].y); } BufferedImage image13 = null; File l = null; try { l = new File("barrier.png"); // image file path image13 = new BufferedImage(x, y, BufferedImage.TYPE_INT_ARGB); image13 = ImageIO.read(l); g.drawImage(image13, barx, bary, null); } catch( IOException e ) { System.out.println("Error: " + e); } BufferedImage image14 = null; File p = null; try { p = new File("barrier.png"); // image file path image14 = new BufferedImage(x, y, BufferedImage.TYPE_INT_ARGB); image14 = ImageIO.read(p); g.drawImage(image14, barx1, bary1, null); } catch( IOException e ) { System.out.println("Error: " + e); } BufferedImage image15 = null; File q = null; try { q = new File("barrier.png"); // image file path image15 = new BufferedImage(x, y, BufferedImage.TYPE_INT_ARGB); image15 = ImageIO.read(q); g.drawImage(image15, barx2, bary2, null); } catch( IOException e ) { System.out.println("Error: " + e); } // no longer used // BufferedImage image16 = null; // File n = null; // try // { // n = new File("swoop.png"); // image file path // image16 = new BufferedImage(x, y, BufferedImage.TYPE_INT_ARGB); // image16 = ImageIO.read(n); // // g.drawImage(image16, saucerx, saucery, null); // } catch( IOException e ) // { // System.out.println("Error: " + e); // // } } public static void main( String args[] ) throws IOException { JForumAnimationJunk jfaj = new JForumAnimationJunk(); jfaj.f.pack(); jfaj.f.setVisible(true); jfaj.t.start(); } public static void drawImage( Graphics g, String imageName, int x, int y ) { BufferedImage image = null; try { image = ImageIO.read(new File(imageName)); } catch( IOException e ) { System.out.println("Image with name " + imageName + "not found!"); } g.drawImage(image, x, y, null); } @Override public void actionPerformed( ActionEvent e ) { // whenever the timer calls this method this.saucer.move(); // this dog won't hunt switch( key ) { case 'a': playerx--; // key for left movement; break; case 'd': playerx++; // key for right movement; break; // no longer used // case 'q': // saucerx--; // break; // case 'e': // saucerx++; // // break; default: break; } // boundary checking if ( playerx < 0 ) { playerx = 0; } else if ( playerx > ( P_WIDTH - O_WIDTH ) ) { playerx = P_WIDTH - O_WIDTH; } if ( playery < 0 ) { playery = 0; } else if ( playery > ( P_HEIGHT - O_HEIGHT ) ) { playery = P_HEIGHT - O_HEIGHT; } // no longer used // if ( saucerx < 0 ) // { // saucerx = 0; // } // else if ( saucerx > ( P_WIDTH - O_WIDTH ) ) // { // saucerx = P_WIDTH - O_WIDTH; // } // if ( saucery < 0 ) // { // saucery = 0; // } // else if ( saucery > ( P_HEIGHT - O_HEIGHT ) ) // { // saucery = P_HEIGHT - O_HEIGHT; // } p.repaint(); } // no longer used // @Override // public void keyPressed( KeyEvent k ) // { // key = k.getKeyChar(); // read key for movement; // } // // @Override // public void keyReleased( KeyEvent k ) // { // key = 'g'; // clears key to something not in the actionPerformed; // // } // // @Override // public void keyTyped( KeyEvent k ) // { // // intentionally left blank; // } public void moveEnemies( ActionEvent evt/* , int[] */) { for ( int c = 0; c < 6; c++ ) { enemies[c].shiftXPosition(10); enemies[c].shiftXPosition(10); } } // unused // public void moveSaucer() // { // boolean move = true; // while(move = true){ // Saucer.shiftXPositionp(20); // Saucer.shiftXPositionn(20); // } class MyJPanel extends JPanel { MyJPanel() { this.setPreferredSize(new Dimension(P_WIDTH, P_HEIGHT)); this.setBackground(Color.BLACK); } @Override public void paintComponent( Graphics g ) { g.setColor(Color.GREEN); super.paintComponent(g); if ( saucer.isVisible() ) { g.drawImage(saucer.getImage(), saucer.getX(), saucer.getY(), this); } g.fillOval(playerx, playery, O_WIDTH, O_HEIGHT); readimage(g);// read image Toolkit.getDefaultToolkit().sync(); g.dispose(); } } public abstract class Sprite extends KeyAdapter { private boolean visible = false; private int x = -1; private int y = -1; private int dx = -1; private int dy = -1; private int minX = -1; private int minY = -1; private int maxX = -1; private int maxY = -1; private int width = -1; private int height = -1; public Sprite( final int minX, final int minY, final int maxX, final int maxY ) { super(); this.minX = minX; this.minY = minY; this.maxX = maxX; this.maxY = maxY; this.x = this.minX; this.y = this.minY; } protected final void setDeltaX( final int dx ) { this.dx = dx; } protected final void setDeltaY( final int dy ) { this.dy = dy; } public void move() { this.x += this.dx; if ( this.x <= this.minX ) this.x = this.minX; if ( this.x >= this.maxX ) this.x = this.maxX; this.y += this.dy; if ( this.y <= this.minY ) this.y = this.minY; if ( this.y >= this.maxY ) this.y = this.maxY; } public final void setWidth( final int width ) { this.width = width; } public final void setHeight( final int height ) { this.height = height; } public final int getWidth() { return this.width; } public final int getHeight() { return this.height; } public final void setVisible( final boolean visible ) { this.visible = visible; } public final boolean isVisible() { return this.visible; } public final int getX() { return this.x; } public final int getY() { return this.y; } } public abstract class ImageSprite extends Sprite { private Image image = null; public ImageSprite( final int minX, final int minY, final int maxX, final int maxY ) { super(minX, minY, maxX, maxY); } public final void setImage( final Image image ) { this.image = image; } public final void setImage( final ImageIcon imageIcon ) { super.setHeight(imageIcon.getIconHeight()); super.setWidth(imageIcon.getIconWidth()); this.setImage(imageIcon.getImage()); } public final Image getImage() { return this.image; } } public class Swoop extends ImageSprite { public Swoop( final int minX, final int minY, final int maxX, final int maxY ) { super(minX, minY, maxX, maxY); super.setImage(new ImageIcon("swoop.png")); } @Override public final void keyPressed( final KeyEvent evt ) { int key = evt.getKeyCode(); // any key to make it visible if ( !super.isVisible() ) super.setVisible(true); if ( key == KeyEvent.VK_Q ) { super.setDeltaX(-2); } if ( key == KeyEvent.VK_E ) { super.setDeltaX(2); } } @Override public final void keyReleased( final KeyEvent evt ) { int key = evt.getKeyCode(); if ( key == KeyEvent.VK_Q ) { super.setDeltaX(0); } if ( key == KeyEvent.VK_E ) { super.setDeltaX(0); } } } // only override what we are actually using private class MyKeyListener extends KeyAdapter { @Override public void keyReleased( final KeyEvent evt ) { saucer.keyReleased(evt); } @Override public void keyPressed( final KeyEvent evt ) { saucer.keyPressed(evt); } } }
maybe you should get some IDE and structure your code???
HTH
Matt

the ${WLS_HOME} (${WL_HOME}/wlserver or ${WL_HOME}/whatever) can be overridden in the GUI installer or in a silent response file.
So that doesn't matter.
Rather looks like that JAVA_HOME is not set!
It fails with \bin\java not found.

HTH
Matt

and your changes should go in setDomainEnv.sh because that is sourced by all lifecycle scripts.
When using NodeManager make sure it is configured to use scripts.

JAVA_OPTIONS="$JAVA_OPTIONS -Dfile.encoding=utf8"
should go in your setDomainEnv.sh file because that is sourced by all other lifecycle scripts.
When using NodeManager, make sure it is configured to use scripts.

happy reading

I'm working w/ WLS since 4.51 and am not aware of any such tool.
Never missed it because normally I create the domains from scripts in WLST.
Everything you can access from the console and all configuration loaded is available in Management Beans.
Make sure you have the right version of docs as some of the MBean paths are changing w/ versions.

HTH
Matt

did you create Uniform Distributed Queues?

Michael Rippee wrote:Thanks for the great example. something I'm working on is referencing and calling methods from other classes, and this is a great example of that.

You're welcome.

Michael Rippee wrote:I don't know. I'm guessing it's just API.

Sorry, wrong guess.

What is the super class of com.coderanch.examples.sni.NumberedObject?

And what does it implement?

Sai, you're right, the original method definition works alright

Sai Hegde wrote:The process method signature needs to be changed to this.
public void process(Map<String, HashMap<Long, Fruit>> buildingblocksmap){ //do something here }

got it wrong first, but yes that works....

import java.util.HashMap; import java.util.Map; public class Test2 { public static void main( String[] args ) { new Test2().doTest(); } public void process( Map<String, HashMap<Long, Fruit>> buildingblocksmap ) { // do something here } public void doTest() { HashMap<Long, Fruit> bramley = new HashMap<Long, Fruit>(); HashMap<Long, Fruit> gala = new HashMap<Long, Fruit>(); Map<String, HashMap<Long, Fruit>> store1 = new HashMap<String, HashMap<Long, Fruit>>(); bramley.put(112L, new Apple()); gala.put(121L, new Apple()); store1.put("Bramley", bramley); store1.put("Gala", gala); process(store1); } } class Fruit{} class Apple extends Fruit{}

There are no methods on java.util.Properties to handle comments.
They are simply ignored when reading the file.

A comment (one per file) can only be added when using store(...) or storeToXML(...).

You would need to implement a class that reads the file line by line and stores these
lines in the correct order.
The NvPs the need to go into some HashTable...

I think you get the picture.

HTH
Matt

alrighty, let's talk some more code

Let's say we want to know for each instance of a class how many instances have been initialized.
So we count them. To get there , we implement a NumberedObject that encapsulates a counter
and an instance number.

package com.coderanch.examples.sni; /** * An example for static and instance variables. * * To allow this class to be accessible from outside its package, it needs to be * declared <code>public</code>. */ public class NumberedObject extends Object { /** * The instance counter. * * We want only one instance counter amongst all <code>NumberedObject</code> * instantiated. Thus, it needs to be declared <code>static</code>. * * It has been encapsulated (declared private) so it cannot be manipulated * from outside of this class' scope. * * Because I do not like uninitialized variables in my source code the value * of the counter is initially set to 0 (zero), even though this is the * default. * */ private static int instanceCounter = 0; /** * The instance number of this object. * * Each instance of <code>NumberedObject</code> has its own number. To * achieve this, it has been defined a (non-static) instance variable. * * It has been encapsulated (declared private) so it cannot be manipulated * from outside of this class' scope. * */ private int instanceNumber = -1; /** * Sole constructor. */ public NumberedObject() { /* * increment the instance counter before assigning its value to the * instance number. */ this.instanceNumber = ++NumberedObject.instanceCounter; } /** * The instance number accessor. * * Because <code>instanceNumber</code> has been declared <code>private</code> * it is only visible within this class. To access the encapsulated * <code>instanceNumber</code> we have to implement a 'getter' method. * * @return the number of this instance */ public final int getInstanceNumber() { return this.instanceNumber; } }

Then we create two instance of this class and invoke (call) two of their methods:
package com.coderanch.examples; /* * The <code>NumberedObject</code> class needs to imported because it resides in * a different package. */ import com.coderanch.examples.sni.NumberedObject; public class StaticAndInstanceExample { public static void main( String args[] ) { /* * Create them two instances. */ NumberedObject no1 = new NumberedObject(); NumberedObject no2 = new NumberedObject(); /* * And invoke two of their methods. */ System.out .println("Hello, I am instance number " + no1.getInstanceNumber() + " of " + no1.getClass().getName() + "."); System.out .println("Hello, I am instance number " + no2.getInstanceNumber() + " of " + no2.getClass().getName() + "."); } }

Hey, we did not code any getClass() method in our NumberedObject, where the heck is that coming form?

HTH
Matt

DIAGRAM