Please people help me with this project ( the bag of fruits)
hey everyone, i have a assignment that due next Monday and i have some troubles solving it its about a bag of fruits where we can put items grab items get items and so on. this site where the applet for this application is exist http://courses.cs.vt.edu/~csonline/SE/Lessons/OOP/index.html this is my code
public class Bag{
String fruits[];
int bagSize;
public Bag () //constructor
String[] newFruits = new String[8];
bagSize=0;
private boolean isEmpty () {
if (bagSize == 0) {
return
true;
return false;
private boolean isFull(){
if ( bagSize== fruits.length-1){
return true;
return false;
private int totalItems () {
return bagSize;
private boolean emptyBag (){
return bagSize ==0 ;
private boolean hasItem ( Object item ) {
for ( int i =0 ; i<= bagSize-1 ; i++)
if ( i == 0)
return false;
return true;
public boolean putItem(String pItem){
if(isFull() == true)
return
false;
else
fruits[bagSize] = pItem;
return true;
i will appreciate any help from you, thanks
madridimoot wrote:
my problem is that i have some missing methods like grabItem , putItem, getItem. and when i run the program it told me out of boundYes I can see from your code that you're having trouble with array indexes; if bagSize == 0 your bag is empty and where your bagSize == 8 (the size of the array) your bag is full. You have to add another fruit item at index position bagSize (and increment it afterwards). Deleting an element is a bit more trouble when you want to use an array. Also your method emptyBag() is redundant because it's functionally equivalent to the isEmpty() method. An array is quite a clumsy data structure for a bag of things. A List would've been better.
kind regards,
Jos
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please! help me with this wrong code, where is mistake?
import java.util.Stack;
public class KnightsTour {
Vars locs[];
private int size, max=1, d=0, board[][];
public KnightsTour(int x,int y, int newSize)
size=newSize;
locs=new Vars[size*size+1];
for(int n=1;n<=size*size;n++)
locs[n]=new Vars();
board=new int[size+1][size+1];
for(int n=1;n<=size;n++)
for(int n2=1;n2<=size;n2++)
board[n][n2]=0;
locs[max].x=x;
locs[max].y=y;
locs[max].d=1;
board[x][y]=max;
max++;
class Vars{
int x;
int y;
int d;
public void GO()
int n=0;
while(max<=size*size)
n++;
d++;
if(d>8)
max--;
board[locs[max].x][locs[max].y]=0;
d=locs[max].d+1;
move();
printBoard();
public void move()
int x=locs[max-1].x, y=locs[max-1].y;
switch(d)
case 1:x--;y-=2;break;
case 2:x++;y-=2;break;
case 3:x+=2;y--;break;
case 4:x+=2;y++;break;
case 5:x++;y+=2;break;
case 6:x--;y+=2;break;
case 7:x-=2;y++;break;
case 8:x-=2;y--;break;
//System.out.println(" X: "+x+" Y: "+y+" |"+max);
if((x<1)||(x>size)||(y<1)||(y>size)){}
else if(board[x][y]!=0){}
else
locs[max].x=x;
locs[max].y=y;
locs[max].d=d;
board[x][y]=max;
max++;
d=0;
//printBoard();
public void printBoard()
for(int n=1;n<=size;n++)
for(int n2=1;n2<=size;n2++)
if(board[n2][n]<10)
System.out.print(board[n2][n]+" ");
else
System.out.print(board[n2][n]+" ");
System.out.println();
//System.out.println();
System.out.println();
public static void main (String[]args){
KnightsTour k = new KnightsTour(1,1,8);
}public class KnightsTour {
Vars locs[];
private int size, max = 1, d = 0, board[][];
public static void main (String[] args) {
KnightsTour k = new KnightsTour (1, 1, 8);
k.GO ();
public KnightsTour (int x, int y, int newSize) {
size = newSize;
locs = new Vars[size * size + 1];
for (int n = 1; n <= size * size; n++) {
locs[n] = new Vars ();
board = new int[size + 1][size + 1];
for (int n = 1; n <= size; n++) {
for (int n2 = 1; n2 <= size; n2++) {
board[n][n2] = 0;
locs[max].x = x;
locs[max].y = y;
locs[max].d = 1;
board[x][y] = max;
max++;
class Vars {
int x;
int y;
int d;
public void GO () {
int n = 0;
while (max <= size * size) {
n++;
d++;
if (d > 8) {
max--;
board[locs[max].x][locs[max].y] = 0;
d = locs[max].d + 1;
move ();
printBoard ();
public void move () {
int x = locs[max - 1].x, y = locs[max - 1].y;
switch (d) {
case 1:
x--;
y -= 2;
break;
case 2:
x++;
y -= 2;
break;
case 3:
x += 2;
y--;
break;
case 4:
x += 2;
y++;
break;
case 5:
x++;
y += 2;
break;
case 6:
x--;
y += 2;
break;
case 7:
x -= 2;
y++;
break;
case 8:
x -= 2;
y--;
break;
//System.out.println(" X: "x" Y: "y" |"+max);
if ((x < 1) || (x > size) || (y < 1) || (y > size)) {
} else if (board[x][y] != 0) {
} else {
locs[max].x = x;
locs[max].y = y;
locs[max].d = d;
board[x][y] = max;
max++;
d = 0;
//printBoard();
public void printBoard () {
for (int n = 1; n <= size; n++) {
for (int n2 = 1; n2 <= size; n2++) {
if (board[n2][n] < 10) {
System.out.print (board[n2][n] + " ");
} else {
System.out.print (board[n2][n] + " ");
System.out.println ();
//System.out.println();
System.out.println ();
}formatting ftw.
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QuickTime 7.7.2
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UpperFilters: GEARAspiWDM (2.2.0.1),
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Can some one help me with this project
This project will simulate the behavior of an Integrity Subsystem in validating the data in a database.
More specifically, assume there are 2 tables, A and B, in a given database. Table A has 4 integer
attributes names a, b, c, d and table B has 4 integer attributes named e, f, g, h.
Your program is to input up to 20 integrity rules as discussed below, and store them in some internal
format of your choosing. Then enter up to 15 tuples for each table. For each tuple, check it against all the
applicable integrity rules and print out an error message for each rule that is violated. If no rules are
violated then print a message saying all it well and enter that tuple into the database. Do not enter a tuple
into a database if any rule is violated for that tuple.
There are 3 different types of integrity rules: Primary key, Foreign key, and Attribute.
The formats for the rules are given below:
Primary key: rule#, P, tablename, attribute name
1 A or B a,b,c,d,e,f,g, or h
The meaning of this rule is that the specified attribute name of the specified table is the
primary key of that table.
Foreign key: rule#, F, tablename, attribute name, tablename, attributename
2 A or B a,b,c,d,e,f,g, or h A or B a,b,c,d,e,f,g, or h
The meaning of this rule is that the first attribute name and tablename is a foreign key
referencing the second attribute name and tablename.
Attribute: rule#, A, tablename, attribute name, low value, high value
3 A or B a,b,c,d,e,f,g, or h 0-9999 0-9999
The meaning of this rule is that the attribute name in the specified table always have a value lying
in the range of low value to high value inclusive.
Your program should implement at least the following 10 rules
Rules:
1 P A b
2 F A d B g
3 A A a 10 20
4 A B h 8 9000
5 P B g
6 A B g 0 100
7 F A c B h
8 A A b 10 30
9 A B e 0 80
10 A A a 8 30
Page 2 of 3
The following data is provided for your convenience to test the correctness of your program. Remember I
will use these data and some other new data for the testing.
Tuples: (Insert in this order)
A 8 32 30 50
A 10 20 30 40
B 5 20 50 100
B 8 30 40 200
A 10 20 100 50
A 10 22 100 40
A 8 32 30 40
B 30 40 50 60
B 80 2000 0 0
A 9 25 200 50
A 12 25 60 50
B 0 0 0 100
A 10 10 10 10
A 20 20 200 40
A 0 0 0 0
B 0 0 0 0
B 50 50 50 50
Specifications:
1. You can just represent the provided 10 rules and new rules created by yourself in some
internal data structures. Or you can store the rules in a text file and then read it one by one.
2. The test data must be stored in a text file �tuples.txt� in which each line has one tuple and
field items are separated by one or more blank spaces (not comma, or colons).
3. Bring a project report at the beginning of the class on the due date. The project report
should have a summary on how you finish the project. For examples, you should discuss
some key data structures you chosen to store the rules and tuples, how you check the invalid
tuples and insert valid tuples, and so on. I hope that after reading the report, I should get some
ideas how you finish the project even without reading the source code.
4. Also you should print out source code and include in the report. In addition, you need to
copy the execution output results. I give a sample expected output for your reference. You
can change it in any way but just make sure it is clear to read for users.
Sample Outputs (for simplicity only three rules used in this example):
Integrity Rules (total 3):
1 P A b
2 F A d B g
3 A A a 10 20
Tuples: (Insert in this order)
T1: A 8 32 30 50
Page 3 of 3
T2: A 10 20 30 40
T3: B 5 20 50 100
T4: A 8 25 40 100
Results:
T1 is invalid (against rule 3), discard it!
T2 is valid, insert to DB
T3 is valid, insert to DB
T4 is invalid (against rule 1), discard it!
Summary:
2 tuples (T2, T3) are inserted to DB
2 tuples (T1, T4) are discarded
5. Bring a floppy disk containing the source code and the project report word file. It should
only have one directory named as your �Firstname.Lastname� For example, if your name is
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Create a subdirectory �Report� to store the report word file. The report name can be
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necessary files to run the program without any further configuration (including �tuples.txt�).
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The zip file name must be �Firstname.Lastname.zip�. For example, if your name is John
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comments (generally > 20%) which explain possible confusions clearly. Also always try to
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Please someone help me with this code..
hi, i have a big problem trying to figure out how to do this, i get this code somewhere in the net, so it's not me who code this, that's why i got this problem.
this is a MIDlet games, something like gallaga. i like to add some features like the UP and DOWN movement and also i have a problem with his "fire", i can only shoot once after the fire image is gone in the screen, what i liked to have is even i pressed the fire button and press it again the fire will not gone, what i mean continues fire if i pressed everytime the fire button.
i will post the code here so you can see it and give me some feedback. i need this badly, hoping to all you guys! thanks..for this forum.
----CODE BEGIN ---------------
import java.io.IOException;
import java.io.PrintStream;
import java.util.Random;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
import javax.microedition.rms.RecordStore;
import javax.microedition.rms.RecordStoreException;
public class MobileGalaga extends MIDlet
implements CommandListener, Runnable
class ScoreScreen extends Canvas
public void paint(Graphics g)
g.setColor(0xffffff);
g.fillRect(0, 0, MobileGalaga.WIDTH, MobileGalaga.HEIGHT);
g.setColor(0x160291);
g.setFont(MobileGalaga.fs);
g.drawString("Help", MobileGalaga.CENTERW, 2, 17);
g.setColor(0);
g.drawString("Use left/right and fire", MobileGalaga.CENTERW, 20, 17);
g.drawString("to destory the", MobileGalaga.CENTERW, 30, 17);
g.drawString("incoming alien MobileGalaga", MobileGalaga.CENTERW, 40, 17);
public void keyPressed(int i)
int j = getGameAction(i);
if(j == 8)
display.setCurrent(titlescreen);
ScoreScreen()
class TitleScreen extends Canvas
public void paint(Graphics g)
g.setColor(0xffffff);
g.fillRect(0, 0, MobileGalaga.WIDTH, MobileGalaga.HEIGHT);
g.drawImage(MobileGalaga.logoimg, MobileGalaga.CENTERW, 15, 17);
g.setColor(0);
g.setFont(MobileGalaga.fs);
g.drawString("Press 5 to", MobileGalaga.CENTERW, 43, 17);
g.drawString("see help", MobileGalaga.CENTERW, 53, 17);
public void keyPressed(int i)
int j = getGameAction(i);
if(j == 8)
display.setCurrent(scorescreen);
TitleScreen()
class MainScreen extends Canvas
public void paint(Graphics g)
offg.setColor(0xffffff);
offg.fillRect(0, 0, MobileGalaga.WIDTH, MobileGalaga.HEIGHT);
for(int i = 0; i < MobileGalaga.slen; i++)
if(!MobileGalaga.dead)
offg.drawImage(MobileGalaga.alienimg[MobileGalaga.frame[i]], MobileGalaga.x[i], MobileGalaga.y[i], 17);
if(!MobileGalaga.playerdead)
offg.drawImage(MobileGalaga.playerimg, MobileGalaga.px, MobileGalaga.py, 17);
} else
if(MobileGalaga.explodeframe < 3)
offg.drawImage(MobileGalaga.explosionimg[MobileGalaga.explodeframe], MobileGalaga.px, MobileGalaga.py, 17);
MobileGalaga.explodeframe++;
if(!MobileGalaga.gameover)
MobileGalaga.playerpause++;
if(MobileGalaga.playerpause < 50)
MobileGalaga.playerpause++;
} else
MobileGalaga.playerdead = false;
MobileGalaga.playerpause = 0;
MobileGalaga.px = MobileGalaga.CENTERW;
offg.setColor(0);
offg.drawString(MobileGalaga.scorestr, MobileGalaga.WIDTH, 0, 24);
offg.drawImage(MobileGalaga.playerimg, 0, 0, 20);
offg.drawString(MobileGalaga.lives + "", 12, 0, 20);
if(MobileGalaga.laser)
offg.drawLine(MobileGalaga.laserx, MobileGalaga.lasery, MobileGalaga.laserx, MobileGalaga.lasery + 4);
if(MobileGalaga.showscores)
for(int j = 0; j < 5; j++)
if(j == MobileGalaga.rank)
offg.setColor(0xff0000);
else
offg.setColor(0);
offg.drawString((j + 1) + " .... " + getScoreStr(MobileGalaga.highscore[j]), MobileGalaga.CENTERW, 20 + j * 10, 17);
if(MobileGalaga.showmessage)
offg.setColor(0xff0000);
offg.drawString(MobileGalaga.msg, MobileGalaga.CENTERW, MobileGalaga.CENTERH, 17);
MobileGalaga.messagepause++;
if(MobileGalaga.messagepause > 20)
MobileGalaga.showmessage = false;
MobileGalaga.messagepause = 0;
if(MobileGalaga.gameover)
MobileGalaga.showscores = true;
else
if(MobileGalaga.wavecomplete)
initWave();
g.drawImage(offimg, 0, 0, 20);
public void keyPressed(int i)
int j = getGameAction(i);
if(j == 2)
MobileGalaga.playerLeft = true;
else
if(j == 5)
MobileGalaga.playerRight = true;
else
if(j == 8)
fireLaser();
public void keyReleased(int i)
int j = getGameAction(i);
if(j == 2)
MobileGalaga.playerLeft = false;
else
if(j == 5)
MobileGalaga.playerRight = false;
private Image offimg;
private Graphics offg;
public MainScreen()
offimg = Image.createImage(getWidth(), getHeight());
offg = offimg.getGraphics();
offg.setFont(MobileGalaga.fs);
public MobileGalaga()
rand = new Random();
display = Display.getDisplay(this);
mainscreen = new MainScreen();
titlescreen = new TitleScreen();
scorescreen = new ScoreScreen();
WIDTH = mainscreen.getWidth();
HEIGHT = mainscreen.getHeight();
CENTERW = WIDTH / 2;
CENTERH = HEIGHT / 2;
exitCommand = new Command("Exit", 7, 1);
playCommand = new Command("Play", 1, 1);
quitCommand = new Command("Quit", 1, 1);
againCommand = new Command("Again", 1, 1);
nullCommand = new Command("", 1, 1);
try
alienimg[0] = Image.createImage("/alien1.png");
alienimg[1] = Image.createImage("/alien2.png");
explosionimg[0] = Image.createImage("/explosion1.png");
explosionimg[1] = Image.createImage("/explosion2.png");
explosionimg[2] = Image.createImage("/explosion3.png");
playerimg = Image.createImage("/player.png");
logoimg = Image.createImage("/logo.png");
catch(IOException ioexception)
db("Couldn't get images!");
imgW = alienimg[0].getWidth();
imgH = alienimg[0].getHeight();
edgeH = imgW / 2;
edgeV = imgH / 2;
pimgW = playerimg.getWidth();
pimgH = playerimg.getHeight();
pedgeH = pimgW / 2;
pedgeV = pimgH / 2;
highscore = getHighScores();
public void run()
while(runner)
rp();
updatePos();
try
MobileGalaga _tmp = this;
Thread.sleep(75L);
catch(InterruptedException interruptedexception)
db("interrupted");
runner = false;
MobileGalaga _tmp1 = this;
Thread.yield();
public void startApp()
throws MIDletStateChangeException
display.setCurrent(titlescreen);
addBeginCommands(titlescreen, false);
addBeginCommands(scorescreen, false);
addPlayCommands(mainscreen, false);
public void pauseApp()
public void destroyApp(boolean flag)
runner = false;
th = null;
private void rp()
mainscreen.repaint();
private void startGame()
initGame();
if(th == null)
th = new Thread(this);
runner = true;
th.start();
private void initGame()
px = CENTERW;
py = HEIGHT - pedgeV - pimgH;
packcount = 0;
lives = 3;
score = 0;
scorestr = "000000";
rank = -1;
difficulty = 400;
wave = 1;
initWave();
private void initWave()
for(int i = 0; i < slen; i++)
frame[i] = i % 2;
x[i] = packX[i] = sposX[i];
y[i] = packY[i] = sposY[i];
dx[i] = packdx = alien_dx_right;
dy[i] = packdy = alien_dy_right;
dxcount[i] = dycount[i] = 0;
pmode[i] = 0;
flying[i] = false;
dead[i] = false;
playerLeft = false;
playerRight = false;
laser = false;
playerdead = false;
showscores = false;
showmessage = false;
gameover = false;
wavecomplete = false;
playerpause = 0;
messagepause = 0;
killed = 0;
private void updatePos()
if(playerLeft)
updatePlayerPos(-2);
else
if(playerRight)
updatePlayerPos(2);
fly = Math.abs(rand.nextInt() % difficulty);
if(fly < slen && !flying[fly] && !dead[fly])
if(x[fly] < CENTERW)
setDX(fly, alien_dx_flyright, 2);
setDY(fly, alien_dy_flyright, 2);
} else
setDX(fly, alien_dx_flyleft, 2);
setDY(fly, alien_dy_flyleft, 2);
flying[fly] = true;
for(int i = 0; i < slen; i++)
if(!dead[i])
if(!flying[i])
if(x[i] + edgeH + dx[i][dxcount[i]] > WIDTH)
changePackDir(alien_dx_left, alien_dy_left);
if((x[i] - edgeH) + dx[i][dxcount[i]] < 0)
changePackDir(alien_dx_right, alien_dy_right);
} else
if(y[i] + edgeV + dy[i][dycount[i]] > HEIGHT)
x[i] = packX[i];
y[i] = packY[i];
flying[i] = false;
setDX(i, packdx, 0);
setDY(i, packdy, 0);
if(!playerdead && y[i] <= py + pedgeV && y[i] >= py - pedgeV && x[i] <= px + pedgeH && x[i] >= px - pedgeH)
playerHit();
if(laser && lasery <= y[i] + edgeV && lasery >= y[i] - edgeV && laserx <= x[i] + edgeH && laserx >= x[i] - edgeH)
alienHit(i);
for(int j = 0; j < slen; j++)
if(!dead[j])
if(framecount == 3)
frame[j] = frame[j] + 1 < 2 ? 1 : 0;
lastx = x[j];
lasty = y[j];
x[j] += dx[j][dxcount[j]];
y[j] += dy[j][dycount[j]];
if(pmode[j] == 0)
dxcount[j] = dxcount[j] + 1 < dx[j].length ? dxcount[j] + 1 : 0;
dycount[j] = dycount[j] + 1 < dy[j].length ? dycount[j] + 1 : 0;
} else
if(pmode[j] == 2)
dxcount[j] = dxcount[j] + 1 < dx[j].length ? dxcount[j] + 1 : dxcount[j];
dycount[j] = dycount[j] + 1 < dy[j].length ? dycount[j] + 1 : dycount[j];
packX[j] += packdx[packcount];
packY[j] += packdy[packcount];
packcount = packcount + 1 < packlen ? packcount + 1 : 0;
framecount = framecount + 1 < 4 ? framecount + 1 : 0;
if(laser)
lasery -= 6;
if(lasery < 0)
laser = false;
private void setDX(int i, int ai[], int j)
if(i == -1)
for(int k = 0; k < slen; k++)
if(!flying[k])
dx[k] = ai;
dxcount[k] = 0;
pmode[k] = j;
} else
dx[i] = ai;
dxcount[i] = 0;
pmode[i] = j;
private void setDY(int i, int ai[], int j)
if(i == -1)
for(int k = 0; k < slen; k++)
if(!flying[k])
dy[k] = ai;
dycount[k] = 0;
pmode[k] = j;
} else
dy[i] = ai;
dycount[i] = 0;
pmode[i] = j;
private void changePackDir(int ai[], int ai1[])
setDX(-1, ai, 0);
setDY(-1, ai1, 0);
packdx = ai;
packdy = ai1;
packcount = 0;
private void updatePlayerPos(int i)
plastx = px;
px += i;
if(px + pedgeH > WIDTH || px - pedgeH < 0)
px = plastx;
private void fireLaser()
if(!laser)
laser = true;
laserx = px;
lasery = py;
private void alienHit(int i)
if(!playerdead)
dead[i] = true;
laser = false;
killed++;
if(flying[i])
score += 200;
else
score += 50;
if(killed == slen)
waveComplete();
scorestr = getScoreStr(score);
private void playerHit()
playerdead = true;
playerpause = 0;
explodeframe = 0;
lives--;
if(lives == 0)
gameOver();
private void waveComplete()
wavecomplete = true;
difficulty -= 100;
if(difficulty < 100)
difficulty = 100;
msg = "WAVE " + wave + " COMPLETE";
messagepause = 0;
showmessage = true;
wave++;
score += 1000 * wave;
scorestr = getScoreStr(score);
private void gameOver()
gameover = true;
msg = "GAME OVER";
for(int i = 0; i < 5; i++)
if(score < highscore[i])
continue;
for(int j = 4; j > i; j--)
highscore[j] = highscore[j - 1];
highscore[i] = score;
rank = i;
break;
setHighScores();
showmessage = true;
messagepause = 0;
addEndCommands(mainscreen, true);
private void addBeginCommands(Displayable displayable, boolean flag)
if(flag)
removeCommands();
displayable.addCommand(playCommand);
displayable.addCommand(exitCommand);
displayable.setCommandListener(this);
private void addPlayCommands(Displayable displayable, boolean flag)
if(flag)
removeCommands();
displayable.addCommand(nullCommand);
displayable.addCommand(quitCommand);
displayable.setCommandListener(this);
private void addEndCommands(Displayable displayable, boolean flag)
if(flag)
removeCommands();
displayable.addCommand(againCommand);
displayable.addCommand(quitCommand);
displayable.setCommandListener(this);
private void removeCommands()
Displayable displayable = display.getCurrent();
displayable.removeCommand(nullCommand);
displayable.removeCommand(quitCommand);
displayable.removeCommand(againCommand);
displayable.removeCommand(playCommand);
displayable.removeCommand(exitCommand);
public void commandAction(Command command, Displayable displayable)
if(command == playCommand)
display.setCurrent(mainscreen);
startGame();
if(command == quitCommand)
runner = false;
while(th.isAlive()) ;
th = null;
addPlayCommands(mainscreen, true);
display.setCurrent(titlescreen);
if(command == againCommand)
runner = false;
while(th.isAlive()) ;
th = null;
display.setCurrent(mainscreen);
addPlayCommands(mainscreen, true);
startGame();
if(command == exitCommand)
destroyApp(false);
notifyDestroyed();
private int[] getHighScores()
int ai[] = new int[5];
ai[0] = 5000;
ai[1] = 4000;
ai[2] = 3000;
ai[3] = 2000;
ai[4] = 1000;
byte abyte0[][] = new byte[5][6];
try
hsdata = RecordStore.openRecordStore("MobileGalaga", true);
int i = hsdata.getNumRecords();
if(i == 0)
for(int j = 0; j < 5; j++)
abyte0[j] = Integer.toString(ai[j]).getBytes();
hsdata.addRecord(abyte0[j], 0, abyte0[j].length);
} else
for(int k = 0; k < 5; k++)
abyte0[k] = hsdata.getRecord(k + 1);
String s = "";
for(int l = 0; l < abyte0[k].length; l++)
s = s + (char)abyte0[k][l] + "";
ai[k] = Integer.parseInt(s);
catch(RecordStoreException recordstoreexception)
db("problem with initialising highscore data\n" + recordstoreexception);
return ai;
private void setHighScores()
byte abyte0[][] = new byte[5][6];
try
hsdata = RecordStore.openRecordStore("MobileGalaga", true);
for(int i = 0; i < 5; i++)
abyte0[i] = Integer.toString(highscore[i]).getBytes();
hsdata.setRecord(i + 1, abyte0[i], 0, abyte0[i].length);
catch(RecordStoreException recordstoreexception)
db("problem with setting highscore data\n" + recordstoreexception);
private String getScoreStr(int i)
templen = 6 - (i + "").length();
tempstr = "";
for(int j = 0; j < templen; j++)
tempstr = tempstr + "0";
return tempstr + i;
public static void db(String s)
System.out.println(s);
public static void db(int i)
System.out.println(i + "");
private Display display;
private Command exitCommand;
private Command playCommand;
private Command quitCommand;
private Command againCommand;
private Command nullCommand;
private MainScreen mainscreen;
private TitleScreen titlescreen;
private ScoreScreen scorescreen;
private static int WIDTH;
private static int HEIGHT;
private static int CENTERW;
private static int CENTERH;
private boolean runner;
private Thread th;
private Random rand;
private static final int RED = 0xff0000;
private static final int ORANGE = 0xff9100;
private static final int YELLOW = 0xffff00;
private static final int WHITE = 0xffffff;
private static final int BLACK = 0;
private static final int BLUE = 0x160291;
private static Image alienimg[] = new Image[2];
private static Image explosionimg[] = new Image[3];
private static Image playerimg;
private static Image logoimg;
private static int imgH;
private static int imgW;
private static int pimgH;
private static int pimgW;
private static int edgeH;
private static int edgeV;
private static int pedgeH;
private static int pedgeV;
private static final Font fs = Font.getFont(64, 0, 8);
private static final Font fl = Font.getFont(64, 1, 16);
private static final int sposX[] = {
16, 28, 40, 52, 4, 16, 28, 40, 52, 64,
4, 16, 28, 40, 52, 64
private static final int sposY[] = {
14, 14, 14, 14, 26, 26, 26, 26, 26, 26,
38, 38, 38, 38, 38, 38
private static final int LOOP = 0;
private static final int ONCE = 1;
private static final int HOLD = 2;
private static final int move_none[] = {
0
private static final int alien_dx_right[] = {
1, 1, 1, 1, 1, 1, 1, 1
private static final int alien_dy_right[] = {
0, 0, 1, 1, 0, 0, -1, -1
private static final int alien_dx_left[] = {
-1, -1, -1, -1, -1, -1, -1, -1
private static final int alien_dy_left[] = {
0, 0, -1, -1, 0, 0, 1, 1
private static final int alien_dx_flyright[] = {
1, 1, 1, 0, -1, -1, -1, -1, -1, 0,
1, 1, 2, 3, 4, 5, 6
private static final int alien_dy_flyright[] = {
0, -1, -1, -1, -1, -1, 0, 1, 1, 1,
1, 1, 2, 3, 4, 5, 6
private static final int alien_dx_flyleft[] = {
-1, -1, -1, 0, 1, 1, 1, 1, 1, 0,
-1, -1, -2, -3, -4, -5, -6
private static final int alien_dy_flyleft[] = {
0, -1, -1, -1, -1, -1, 0, 1, 1, 1,
1, 1, 2, 3, 4, 5, 6
private static final int slen;
private static final int ailen;
private static final int packlen;
private static int pmode[];
private static int x[];
private static int y[];
private static int dx[][];
private static int dy[][];
private static int dxcount[];
private static int dycount[];
private static int frame[];
private static boolean flying[];
private static boolean dead[];
private static boolean exploding[];
private static int lastx;
private static int lasty;
private static int fly;
private static int packX[];
private static int packY[];
private static int packdx[];
private static int packdy[];
private static int packcount;
private static int framecount = 3;
private static int px;
private static int py;
private static int plastx;
private static int score;
private static String scorestr;
private static int lives;
private static int killed;
private static boolean playerdead;
private static int explodeframe;
private static int playerpause;
private static int rank;
private static boolean playerLeft;
private static boolean playerRight;
private static boolean laser;
private static int laserx;
private static int lasery;
private static RecordStore hsdata;
private static int highscore[] = new int[5];
private static boolean showmessage;
private static boolean showscores;
private static boolean gameover;
private static boolean wavecomplete;
private static int messagepause;
private static String msg;
private static int difficulty;
private static int wave;
private static String tempstr;
private static int templen;
static
slen = sposX.length;
ailen = alien_dx_flyright.length;
packlen = alien_dx_right.length;
pmode = new int[slen];
x = new int[slen];
y = new int[slen];
dx = new int[slen][ailen];
dy = new int[slen][ailen];
dxcount = new int[slen];
dycount = new int[slen];
frame = new int[slen];
flying = new boolean[slen];
dead = new boolean[slen];
exploding = new boolean[slen];
packX = new int[slen];
packY = new int[slen];
packdx = new int[packlen];
packdy = new int[packlen];
----END OF CODE ----------------hi sorry if it's too big! i hope i can explain this very well (you know i only got this code in the net), if you try to run the program in emulator, the and lunch it will it will first display the title screen and if you hit the pressed key 5 it will display help,
so my problem is how to move UP and DOWN and also if i pressed the fire button it will continue to fire. here is the code.
//Code for the Left,Right,UP and Down movement and also the fire
public void keyPressed(int i)
int j = getGameAction(i);
if(j == 2)
MobileGalaga.playerLeft = true; //this is ok
else
if(j == 5)
MobileGalaga.playerRight = true; //this is ok
else
if(j==1)
MobileGalaga.playerUp = true; //i add this only, this has a problem
else
if(j==6)
MobileGalaga.playerDown = true; //i add this only, this has a problem
else
if(j == 8)
fireLaser(); //for the release of fire
//for the release of key pressed
public void keyReleased(int i)
int j = getGameAction(i);
if(j == 2)
MobileGalaga.playerLeft = false;
else
if(j == 5)
MobileGalaga.playerRight = false;
//Update the position base on key pressed
private void updatePos()
if(playerLeft)
updatePlayerPos(-5);
else
if(playerUp)
updatePlayerPos1(-4);
else
if(playerDown)
updatePlayerPos1(4);
else
if(playerRight)
updatePlayerPos(5);
fly = Math.abs(rand.nextInt() % difficulty);
if(fly < slen && !flying[fly] && !dead[fly])
if(x[fly] < CENTERW)
setDX(fly, alien_dx_flyright, 2);
setDY(fly, alien_dy_flyright, 2);
} else
setDX(fly, alien_dx_flyleft, 2);
setDY(fly, alien_dy_flyleft, 2);
flying[fly] = true;
for(int i = 0; i < slen; i++)
if(!dead)
if(!flying[i])
if(x[i] + edgeH + dx[i][dxcount[i]] > WIDTH)
changePackDir(alien_dx_left, alien_dy_left);
if((x[i] - edgeH) + dx[i][dxcount[i]] < 0)
changePackDir(alien_dx_right, alien_dy_right);
} else
if(y[i] + edgeV + dy[i][dycount[i]] > HEIGHT)
x[i] = packX[i];
y[i] = packY[i];
flying[i] = false;
setDX(i, packdx, 0);
setDY(i, packdy, 0);
if(!playerdead && y[i] <= py + pedgeV && y[i] >= py - pedgeV && x[i] <= px + pedgeH && x[i] >= px - pedgeH)
playerHit();
if(laser && lasery <= y[i] + edgeV && lasery >= y[i] - edgeV && laserx <= x[i] + edgeH && laserx >= x[i] - edgeH)
alienHit(i);
for(int j = 0; j < slen; j++)
if(!dead[j])
if(framecount == 3)
frame[j] = frame[j] + 1 < 2 ? 1 : 0;
lastx = x[j];
lasty = y[j];
x[j] += dx[j][dxcount[j]];
y[j] += dy[j][dycount[j]];
if(pmode[j] == 0)
dxcount[j] = dxcount[j] + 1 < dx[j].length ? dxcount[j] + 1 : 0;
dycount[j] = dycount[j] + 1 < dy[j].length ? dycount[j] + 1 : 0;
} else
if(pmode[j] == 2)
dxcount[j] = dxcount[j] + 1 < dx[j].length ? dxcount[j] + 1 : dxcount[j];
dycount[j] = dycount[j] + 1 < dy[j].length ? dycount[j] + 1 : dycount[j];
packX[j] += packdx[packcount];
packY[j] += packdy[packcount];
packcount = packcount + 1 < packlen ? packcount + 1 : 0;
framecount = framecount + 1 < 4 ? framecount + 1 : 0;
if(laser)
lasery -= 6;
if(lasery < 0 )
laser = false;
// this will move the object UP,DOWN,Left and Right
private void updatePlayerPos(int i)
plastx = px;
px += i;
if(px + pedgeH > WIDTH || px - pedgeH < 0)
px = plastx;
private void updatePlayerPos1(int i)
plastx = py;
py += i;
if(px + pedgeV > HEIGHT || px - pedgeV < 0)
px = plastx;
// This will fire, if you hit the fire button
private void fireLaser()
if(!laser)
laser = true;
laserx = px;
lasery = py;
sorry if it's too long i just want too explain this. if anyone like to see this and run so that you can see it also, i can send an email.
thanks,
alek -
Please somebody help me with this
1.1 modify the application so that:
i) Information about any foreign key constraints for the selected table is displayed eg as
additional labels in the table editor window, or in a separate dialog window.
You can choose how you wish to display this information.
ii) An Update button is added for each text field in the display, which will attempt to update the corresponding field in the database table, from the current data in the textfield. The following code will retrieve the current value from a JTextField object:
String newValue = textfieldName.getText();
The following code will convert the string to a number:
int newNumber = Integer.parseInt(newValue);
Remember, an attempt to update a row in a table may fail if eg it tries to alter a
foreign key to a value not currently recorded for any corresponding primary key
that the foreign key refers to.
An attempt to set a foreign key field to 'null' should always be successful.
If the update attempt fails, the value in the displayed text field should revert to its
original state, to maintain consistency with the database.
import java.io.*;
import java.sql.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import oracle.jdbc.driver.*;
* class JdbcCW
* demonstration of Java client connecting to an Oracle DBMS
* @author put your name here
* @date December 2002
public class JdbcCW extends JFrame{
static String url = "jdbc:oracle:thin:@localhost:1521:orcl";
static String initialquery = "select table_name from user_tables";
static String nullstring = "null";
private String user;
private String pass;
private Connection conn;
private Statement stmt;
private ResultSet results;
private JComboBox tableChooser;
private JButton editButton;
private JButton exitButton;
private JButton detailsButton;
private JPanel panel1;
private JPanel panel2;
private String selectedTable;
private Container cp;
public static void main(String[] args) throws SQLException {
JdbcCW demo = new JdbcCW();
demo.show();
* JdbcCW constructor method
public JdbcCW() throws SQLException {
super("Java/Oracle coursework");
addWindowListener (new WindowAdapter() {
public void windowClosing (WindowEvent evt) {
System.exit(0);
try {
user =
JOptionPane.showInputDialog("enter oracle username eg ops$c9999999");
pass = JOptionPane.showInputDialog("enter oracle password eg 29feb80");
if ( user.length() == 0 || pass.length() == 0)
throw new Exception("no user name and/or password");
DriverManager.registerDriver (new OracleDriver());
conn = DriverManager.getConnection(url, user, pass);
if (conn != null)
System.out.println("Connected");
catch (Exception e ) {
e.printStackTrace();
System.exit(0); // problems - abandon ship
// now we can access tables in the database
stmt = conn.createStatement();
results = stmt.executeQuery(initialquery);
boolean anyRecords = results.next();
if ( ! anyRecords ) {
JOptionPane.showMessageDialog (this, "No Tables in the database");
System.exit(0);
tableChooser = new JComboBox();
do
tableChooser.addItem(results.getString(1));
while (results.next() ) ;
selectedTable = (String) tableChooser.getSelectedItem();
tableChooser.addActionListener (new ActionListener () {
public void actionPerformed (ActionEvent evt) {
changeTable();
editButton = new JButton("Edit");
editButton.addActionListener(new ActionListener () {
public void actionPerformed(ActionEvent evt) {
runEdit();
exitButton = new JButton("Exit");
exitButton.addActionListener(new ActionListener () {
public void actionPerformed(ActionEvent evt) {
System.exit(0);
panel1 = new JPanel(); // panels have flow layout
JLabel label1 = new JLabel("Choose Table");
panel1.add(label1);
panel1.add(tableChooser);
panel2 = new JPanel();
panel2.add(editButton);
panel2.add(exitButton);
cp = getContentPane();
cp.add(panel1,BorderLayout.NORTH);
cp.add(panel2,BorderLayout.SOUTH);
setSize(300,200);
setLocation(100,100);
private void changeTable() {
selectedTable = (String) tableChooser.getSelectedItem();
* method runEdit runs a query to determine the structure of the
* selected table in order to customise the table editor window
private void runEdit() {
System.out.println("Selected Table " + selectedTable);
String query = "select column_name,data_type from user_tab_columns " +
"where table_name = '" + selectedTable + "'";
try {
results = stmt.executeQuery(query);
} catch (java.sql.SQLException e) {
System.out.println("SQL Exception on query " + query);
return;
JdbcEdit tableEditor = new JdbcEdit(this,selectedTable,results);
tableEditor.show();
public ResultSet makeQuery(String query) {
ResultSet results;
try {
results = stmt.executeQuery(query);
} catch (SQLException e) {
System.out.println("Query Failed " + query);
return null;
return results;
} // end class JdbcGen
* class JdbcEdit
* oracle table editing dialog window
* @author put your name here as well
* @date December 2002
class JdbcEdit extends JDialog {
private JdbcCW parent;
private Container cp;
private Vector columnNames;
private Vector dataTypes;
private Vector editFields;
private Vector rows;
private int noOfColumns;
private int currentRow = 0;
* JdbcEdit constructor method
* the parameter true makes the dialog window modal -
* the parent frame is inactive as long as this window is displayed
public JdbcEdit (JdbcCW parent, String tableName, ResultSet results) {
super(parent,"table editor " + tableName, true);
this.parent = parent;
columnNames = new Vector();
dataTypes = new Vector();
editFields = new Vector();
JPanel mainPanel = new JPanel();
mainPanel.setLayout(new BoxLayout(mainPanel,BoxLayout.Y_AXIS));
// boxLayout - components are added to mainPanel in a vertical stack
try {
boolean anyRecords = results.next();
if ( ! anyRecords ) {
JOptionPane.showMessageDialog (this, "No Detail for " +
tableName+ " in the database");
return;
do {
String columnName = results.getString(1);
String dataType = results.getString(2);
System.out.println("Row " + columnName + " Type " + dataType);
JPanel editPanel = new JPanel();
JLabel colNameLabel = new JLabel(columnName);
JTextField dataField = new JTextField(20);
editPanel.add(colNameLabel);
editPanel.add(dataField);
// this would be a good place to add an Update button
mainPanel.add(editPanel);
// now store the columnName, dataType and data text field
// in vectors so other methods can access them
// at this point in time the text field is empty
columnNames.add(columnName);
dataTypes.add(dataType);
editFields.add(dataField);
}while (results.next() ) ;
} catch (java.sql.SQLException e) {
System.out.println("SQL Exception on query ");
return;
// get the data from the Oracle table and put the first
// row of data in the text fields in the dialog window
populateData(tableName);
// find out which column(s) are part of the primary key and make these
// textfields non-editable so the values can't be changed
findPKConstraints(tableName);
// this would be a good place to discover any foreign key constraints
JPanel buttonsPanel = new JPanel();
JButton exitButton = new JButton("Exit");
exitButton.addActionListener(new ActionListener () {
public void actionPerformed(ActionEvent evt) {
closeWindow();
JButton nextButton = new JButton("Next");
nextButton.addActionListener(new ActionListener () {
public void actionPerformed(ActionEvent evt) {
showRow(true);
JButton prevButton = new JButton("Prev");
prevButton.addActionListener(new ActionListener () {
public void actionPerformed(ActionEvent evt) {
showRow(false);
buttonsPanel.add(exitButton);
buttonsPanel.add(nextButton);
buttonsPanel.add(prevButton);
cp = getContentPane();
cp.add(mainPanel,BorderLayout.CENTER);
cp.add(buttonsPanel,BorderLayout.SOUTH);
pack();
private void closeWindow() {
dispose();
private void populateData(String tableName) {
int noOfColumns;
// have to access the Statement object in the parent frame
ResultSet tableData = parent.makeQuery("select * from " + tableName);
try {
boolean anyRecords = tableData.next();
if ( ! anyRecords ) {
JOptionPane.showMessageDialog (this, "No data in " +
tableName);
return;
rows = new Vector();
noOfColumns = columnNames.size();
do {
String [] row = new String[noOfColumns];
for (int i = 0; i < noOfColumns; i++) {
row[i] = tableData.getString(i+1);
rows.add(row);
} while (tableData.next() ) ;
} catch (java.sql.SQLException e) {
System.out.println("SQL Exception on query ");
return;
// Put the first row of data from the table into the test fields;
String [] rowData = (String[]) rows.get(0);
for (int i = 0; i < noOfColumns; i++) {
// get the reference to a text field in the dialog window
JTextField textField = (JTextField) editFields.get(i);
// vector editFields holds a reference to each JTextField
// in the visible dialog window
// hence the next line of code puts the data retrieved from
// the table into the relevant text field in the GUI interface
textField.setText(rowData);
// method showRow updates the textfields in the GUI interface
// with the next row of data from the table ( if next is true)
// or with the previous row of data from the table ( if next is false)
private void showRow(boolean next) {
if ( rows == null ) {
System.out.println("table is empty");
getToolkit().beep();
return;
if (next && currentRow < rows.size() - 1) {
currentRow++;
} else if (!next && currentRow > 0) {
currentRow--;
} else {
System.out.println("No Next/Prev row " + currentRow);
getToolkit().beep();
return;
String [] rowData = (String[]) rows.get(currentRow);
int noOfAttributes = dataTypes.size();
for (int i = 0; i < noOfAttributes; i++) {
JTextField textField = (JTextField) editFields.get(i);
textField.setText(rowData[i]);
private void findPKConstraints(String tableName){
String PK_ConstraintName = "none";
String pkquery =
"select owner,constraint_name from user_constraints " +
"where table_name = '" + tableName + "' and constraint_type = 'P'";
// have to access the Statement object in the parent frame
ResultSet results = parent.makeQuery(pkquery);
try {
boolean anyRecords = results.next();
if ( ! anyRecords ) {
// if none just return - but print a debug message
System.out.println("No primary key constraint found");
return;
} else {
// There should only be one
System.out.println("Owner = " + results.getString(1) +
" name = " + results.getString(2));
PK_ConstraintName = results.getString(2);
// Now find out which columns
pkquery =
"select Column_name, position from user_cons_columns"
+ " where constraint_name = '" + PK_ConstraintName
+ "'";
// have to access the Statement object in the parent frame
results = parent.makeQuery(pkquery);
anyRecords = results.next();
if ( ! anyRecords ) {
// if none just return - but there must be at least one
System.out.println("no columns found");
return;
} else {
do {
System.out.println
("Name " + results.getString(1) +
" position " + results.getString(2))
int position = Integer.parseInt(results.getString(2));
JTextField primarykey =
(JTextField)editFields.get(position - 1);
primarykey.setEditable(false);
} while (results.next());
} catch (java.sql.SQLException e) {
System.out.println("SQL Exception on query " + pkquery);
return;You're pretty optimistic if you think anyone is going to answer that. There are three very good reasons not to (each is good enough by themselves!).
1. IT'S YOUR HOMEWORK, IT DOESN'T EVEN LOOK AS THOUGH YOU'VE TRIED. WE HELP WITH PROBLEMS, NOT PROVIDE SOLUTIONS, ESPECIALLY FOR HOMEWORK.
2. Format your code. Use [ code] and [ /code] (without the spaces). And if you've used 'i' as an index variable, [ i] will result in switching to italics mode. Use 'j' as your index variable.
3. Don't post your whole program, only the parts you're having trouble with (mostly not relevant for this question, as you don't seem to have trouble with any particular area) -
Please anyone help me with this
Hi guys, Check this out:
http://www.large-online.nl/partnerimg/4/436794.jpg
How do you remove the letter in photoshop cs5? I wanted it removed while maintaining the hair.
please explain me step by step. thank you!Yes it is not my image, you are right, I am sorry...
I've decided not to continue this idea. So, case closed.
Thank you to all of you, take care and best wishes
cheers
me -
Please People Help Me With All Your Heart
itunes want get my ipod like the source plane doesnt pop up can someone help me please i'm trying to put my new songs on my ipod please i will really appriated please
try downloading that at apple web site
i usually use that to detect my ipod if it cannot be detected
by itunes then restore it
ipod getting undetected was sometime cause by corrupted software
if ipod updater failed to detect your ipod try bringing it to an apple service center -
I'm using Iphone 4. how to delete the stuff in UPDATES section from the app store icon pls??????
The only way to do that is to delete the apps on your phone or update the apps.
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Hi can anyone help with this issue regarding my wireless magic mouse? When im on google chrome and scrolling down the page i always have youtube running in the background but the audio cuts/spits/pops can anyone help me with this?
The figures you mention only make sense on your intranet. Are you still using the same wireless router. The verizon one is somewhat limited as far as max wireless-n performace. For one thing it only has a 2.4 radio. I like many people who wanted wireless-n performance before they even added a wireless-n gigabit router, have my own handling my wireless-n network.
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I want to install xp on my MacBook Pro with i5 processor, but that creates the partition and restart the computer just stays in the following message: The Setup is inspecting your hardware configuration of your computer, someone can help me with this ?
The answer has not changed since your last post here https://discussions.apple.com/thread/3230576?tstart=0
There are no XP or Vista drivers for the new Apple computer hardware. Apple stopped XP and Vista support. http://support.apple.com/kb/HT4410. -
I just bought this movie "Godzilla 2014" but it won't show in my Movie Library. I closed my Itunes and put it back on again but still won't show up. I checked my purchased list and it shows that I recently bought the movie but when I checked the itunes store it wants to buy the movie again. Please help me with this right away Apple.
Apple Store Customer Service at 1-800-676-2775 or visit online Help for more information.
To contact product and tech support: Contacting Apple for support and service - this includes
international calling numbers..
For Mac App Store: Apple - Support - Mac App Store.
For iTunes: Apple - Support - iTunes. -
"It is formatted incorrectly, or is not a format that iBooks can open". Can anyone help me with this message of a book that I purchased on iBooks, read, highlighted in the book and now I can't open it anymore. Please help!!!
Mine does the same thing occasionally, is your phone jailbroken? Sometimes it will work if you delete the book and reinstall it or put your phone into airplane mode then turn it back off.
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I just bought a new Macbook Pro and Itunes is not letting me authorize it for use because I have 5 computers authorized including old iphones I no longer have and an old computer that is broken. How do I deauthorize computers I no longer have?
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I have a clip with several primary and secondary corrections on it and want to apply a mask to a primary correction. So far so good, but how do I apply a different mask to the same clip but to a different primary or secondary correction layer? SG all
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IOS 7.0.4 battery issue on my 4s
I normally don't post, I can't help but voice my frustration. My wife and I have the same type iphone, 4s I always update before she does. Recently updated my iphone 4s to iOS 7.0.4 around Nov. 22, Since my update I've had a problem getting through t
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Hey guys, I'm new here and just received my first MSI board from newegg. I have installed a brand spanking new Core 2 Duo E6400, twin sticks of g.skill 2gb ram, and the MSI P6N 650i SLI motherboard. I boot up and everything looks good, get into BIO
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Can't See Hotmail Messages in Mail
Mail recognizes the account and appears to download the messages but only about 40 old messages appear in the inbox. The remainder are inaccessible. Am I missing something? New iMac/10.6.8.