Develop a Snake Game in java - part 2 (Interface)

In this second part of "Developing snake game in java", we will write code for making the user interface for our game. We will use JFrame and JPanel to do that.

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[NewLife-ozoc]

Nice explanation.👩‍💻
But how can we know the exact values of the parameters to be given in drawRect(24, 10, 851, 55);

[dnainawa]

sir using notepad its not workin...nd here no option for set all those(project mame....) setups which we do in netbeans...

[shivilsachdeva]

Hey man, trying to run the program on netbeans. Have the images in the same src folder as the classes. When I call the file and run the program, nothing comes up, not even the borders. I'm using a MacBook, maybe not inputting the path correctly? Not sure, but I've tried a lot of different things. Would really appreciate some tips. Thank you!

[vascoponciano]

Where i can downloads the png images for the game?

[muditsrivastava]

There are some problem with this code please resolve this (snake had drown but the movement of snake is not working) please help

[kvachweb]

hello I do not understand why the error

import java.awt.Color;
import javax.swing.JFrame;

public class Main {

public static void main(String[] args) {
JFrame obj = new JFrame();
Gameplay gameplay = new Gameplay();

obj.setBounds(10, 10, 905, 700);

obj.setResizable(false);
obj.setVisible(true);

obj.add(gameplay);
}

}



import java.awt.Color;
import java.awt.Graphics;

import javax.swing.ImageIcon;
import javax.swing.JFrame;

public class Gameplay extends JFrame{
private ImageIcon titleImage;

public Gameplay() {

}

public void paint(Graphics g)
{
// draw title image border
g.setColor(Color.white);
g.drawRect(24, 10, 851, 55);

// draw the title image
titleImage = new ImageIcon("snaketitle.jpg");
titleImage.paintIcon(this, g, 25, 11);

// draw border for gameplay
g.setColor(Color.WHITE);
g.drawRect(24, 74, 851, 577);

// draw backqround for the gameplay
g.setColor(Color.black);
g.fillRect(25, 75, 850, 575);

}
}


Exception in thread "main" adding a window to a container
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[derekjohnson]

ive tried all the help in the comments for how to get images to show but nothing is working. can someone help me out ?

here is my code:

import java.awt.Color;

import javax.swing.JFrame;
public class Main {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
JFrame obj = new JFrame();
Gameplay gameplay = new Gameplay();

obj.setBounds(10, 10, 905, 700);

obj.setResizable(false);
obj.setVisible(true);
);
obj.add(gameplay);


}

}

Gameplay frame:

import java.awt.Color;


import java.awt.Font;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.ImageIcon;
import javax.swing.JPanel;
import javax.swing.Timer;


public class Gameplay extends JPanel implements KeyListener, ActionListener{



private int [] snakexlength = new int[750];
private int [] snakeylength = new int[750];

private boolean left = false;
private boolean right = false;
private boolean up = false;
private boolean down = false;

private ImageIcon rightmouth;
private ImageIcon downmouth;
private ImageIcon upmouth;
private ImageIcon leftmouth;

private int lengthofsnake = 3;



private Timer timer;
private int delay = 100;
private ImageIcon snakeimage;

private int moves = 0;





private ImageIcon titleImage;




public Gameplay()
{
addKeyListener(this);
setFocusable(true);

timer = new Timer(delay, this);
timer.start();
}

public void paint(Graphics g)
{

if(moves == 0)
{
snakexlength[2] = 50;
snakexlength[1] = 75;
snakexlength[0] = 100;

snakeylength[2] = 100;
snakeylength[1] = 100;
snakeylength[0] = 100;
}
// draw title image border
g.setColor(Color.white);
g.drawRect(24, 10, 851, 55);

// draw the title image
titleImage = new ImageIcon("snaketitle.jpg");
titleImage.paintIcon(this, g, 25, 11);

// draw border for gameplay
g.setColor(Color.WHITE);
g.drawRect(24, 74, 851, 577);

// draw background for gameplay
g.setColor(Color.black);
g.fillRect(25, 75, 850, 575);

rightmouth = new ImageIcon("rightmouth.png");
rightmouth.paintIcon(this, g, snakexlength[0], snakeylength[0]);

for(int a = 0; a < lengthofsnake; a++)
{
if(a == 0 && right)
{
rightmouth = new ImageIcon("rightmouth.png");
rightmouth.paintIcon(this, g, snakexlength[a], snakeylength[a]);
}
if(a == 0 && left)
{
leftmouth = new ImageIcon("lefttmouth.png");
leftmouth.paintIcon(this, g, snakexlength[a], snakeylength[a]);
}
if(a == 0 && down)
{
downmouth = new ImageIcon("downmouth.png");
downmouth.paintIcon(this, g, snakexlength[a], snakeylength[a]);
}
if(a == 0 && up)
{
upmouth = new ImageIcon("upmouth.png");
upmouth.paintIcon(this, g, snakexlength[a], snakeylength[a]);
}
if (a!=0)
{
snakeimage = new ImageIcon("snakeimage.png");
snakeimage.paintIcon(this, g, snakexlength[a], snakeylength[a]);
}

}

g.dispose();
}

@Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub

}

@Override
public void keyPressed(KeyEvent arg0) {
// TODO Auto-generated method stub

}

@Override
public void keyReleased(KeyEvent arg0) {
// TODO Auto-generated method stub

}

@Override
public void keyTyped(KeyEvent arg0) {
// TODO Auto-generated method stub

}
}

[prashantshukla]

after run the project there is nothing in output??

[madhurshanan]

bro I am trying to build this app in net-beans. I try to import the images but it wont showing while running the project. I need know where should i have to import the images in my project and is there any separate code for net beans?