我在日食中做了一个小游戏，但我无法导出它。每当我尝试这样做时，都没有启动配置，经过一段时间的玩弄，我发现了如何创建一个，但现在我得到了错误
“JAR导出已完成警告。有关其他信息，请参阅详细信息。 使用编译警告导出：space / src / space / main.java 罐子出口完成了问题。详细信息请参阅其他信息。 无法从给定的启动配置中找到主要方法。“
我目前正在使用两个类文件。我读过它可能是因为它不是GUI，但它不使用控制台并在窗口中显示，所以我可能只是感到困惑。 包空间;
import java.awt.Graphics;
public class main extends gameloop{
public void init(){
setSize(1280,720);
Thread th = new Thread(this);
th.start();
offscreen = createImage(1280,720);
d = offscreen.getGraphics();
addKeyListener(this);
}
public void paint(Graphics g){
d.clearRect(0,0,1280,720);
d.drawImage(voidspace,0,0, this);
d.drawImage(wall,50,0,this);
d.drawImage(floor,100,0,this);
int[][] map=
{
{20,27,28,27,28,22},
{24,11,14,14,17,31},
{25,12,15,15,18,31},
{26,13,16,16,19,31},
{21,29,30,29,30,23}
};
int rows = 5;
int cols = 6;
int i, j;
for (i = 0; i < rows; i++) {
for (j = 0; j < cols; j++) {
if(txtremode == 1){
if(map[i][j] == 10){
d.drawImage(voidspace,i*50,j*50,this);
}
if(map[i][j] == 11){
d.drawImage(floor,i*50,j*50,this);
}
if(map[i][j] == 12){
d.drawImage(floor,i*50,j*50,this);
}
if(map[i][j] == 13){
d.drawImage(floor,i*50,j*50,this);
}
if(map[i][j] == 14){
d.drawImage(floor,i*50,j*50,this);
}
if(map[i][j] == 15){
d.drawImage(floor,i*50,j*50,this);
}
if(map[i][j] == 16){
d.drawImage(floor,i*50,j*50,this);
}
if(map[i][j] == 17){
d.drawImage(floor,i*50,j*50,this);
}
if(map[i][j] == 18){
d.drawImage(floor,i*50,j*50,this);
}
if(map[i][j] == 19){
d.drawImage(floor,i*50,j*50,this);
}
//corners
if(map[i][j] == 20){
d.drawImage(wall,i*50,j*50,this);
}
if(map[i][j] == 21){
d.drawImage(wall,i*50,j*50,this);
}
if(map[i][j] == 22){
d.drawImage(wall,i*50,j*50,this);
}
if(map[i][j] == 23){
d.drawImage(wall,i*50,j*50,this);
}
//walls
if(map[i][j] == 24){
d.drawImage(wall,i*50,j*50,this);
}
if(map[i][j] == 25){
d.drawImage(wall,i*50,j*50,this);
}
if(map[i][j] == 26){
d.drawImage(wall,i*50,j*50,this);
}
if(map[i][j] == 27){
d.drawImage(wall,i*50,j*50,this);
}
if(map[i][j] == 28){
d.drawImage(wall,i*50,j*50,this);
}
if(map[i][j] == 29){
d.drawImage(wall,i*50,j*50,this);
}
if(map[i][j] == 30){
d.drawImage(wall,i*50,j*50,this);
}
if(map[i][j] == 31){
d.drawImage(wall,i*50,j*50,this);
}
}
//easteregg
if(txtremode == 112109100){
if(map[i][j] == 10){
d.drawImage(voidspace,i*50,j*50,this);
}
//pmd-based floors(1-9)
if(map[i][j] == 11){
d.drawImage(pmdtlf,i*50,j*50,this);
}
if(map[i][j] == 12){
d.drawImage(pmdtmf,i*50,j*50,this);
}
if(map[i][j] == 13){
d.drawImage(pmdtrf,i*50,j*50,this);
}
if(map[i][j] == 14){
d.drawImage(pmdmlf,i*50,j*50,this);
}
if(map[i][j] == 15){
d.drawImage(pmdflr_base,i*50,j*50,this);
}
if(map[i][j] == 16){
d.drawImage(pmdmrf,i*50,j*50,this);
}
if(map[i][j] == 17){
d.drawImage(pmdblf,i*50,j*50,this);
}
if(map[i][j] == 18){
d.drawImage(pmdbmf,i*50,j*50,this);
}
if(map[i][j] == 19){
d.drawImage(pmdbrf,i*50,j*50,this);
}
//pmd-based corners
if(map[i][j] == 20){
d.drawImage(pmdtlc,i*50,j*50,this);
}
if(map[i][j] == 21){
d.drawImage(pmdtrc,i*50,j*50,this);
}
if(map[i][j] == 22){
d.drawImage(pmdblc,i*50,j*50,this);
}
if(map[i][j] == 23){
d.drawImage(pmdbrc,i*50,j*50,this);
}
//pmd-based walls
if(map[i][j] == 24){
d.drawImage(pmdtw1,i*50,j*50,this);
}
if(map[i][j] == 25){
d.drawImage(pmdtw2,i*50,j*50,this);
}
if(map[i][j] == 26){
d.drawImage(pmdtw3,i*50,j*50,this);
}
if(map[i][j] == 27){
d.drawImage(pmdlw1,i*50,j*50,this);
}
if(map[i][j] == 28){
d.drawImage(pmdlw2,i*50,j*50,this);
}
if(map[i][j] == 29){
d.drawImage(pmdrw1,i*50,j*50,this);
}
if(map[i][j] == 30){
d.drawImage(pmdrw2,i*50,j*50,this);
}
if(map[i][j] == 31){
d.drawImage(pmdbw1,i*50,j*50,this);
}
}
}
}
g.drawImage(offscreen,0,0,this );
}
public void update(Graphics g){
paint (g);
}
}
接下来主要是一个循环，但我还没有实现。
package space;
import java.applet.Applet;
import java.awt.Graphics;
import java.awt.Image;
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;
@SuppressWarnings("serial")
public class gameloop extends Applet implements Runnable, KeyListener{
public int x,y,windowx,windowy,txtremode;
public Image offscreen;
public Graphics d;
public boolean up, down, left, right;
public BufferedImage closed_door,floor,open_door,voidspace,wall; //default
public BufferedImage pmdtiles,pmdtlc,pmdtrc,pmdblc,pmdbrc; //pmd-based wall corners
public BufferedImage pmdtw1,pmdtw2,pmdtw3,pmdlw1,pmdlw2,pmdrw1,pmdrw2,pmdbw1;//pmd-based walls (w/ varients)
public BufferedImage pmdtlf,pmdtmf,pmdtrf,pmdmlf,pmdflr_base,pmdmrf,pmdblf,pmdbmf,pmdbrf; //pmd-based floor(1-9)
public int counter;
public double counter2 = 0;
public String score2 = "";
public void run() {
try {
wall = ImageIO.read(new File("wall.png"));
floor = ImageIO.read(new File("floor.png"));
closed_door = ImageIO.read(new File("closed_door.png"));
open_door = ImageIO.read(new File("open_door.png"));
voidspace = ImageIO.read(new File("void.png"));
pmdtiles = ImageIO.read(new File("pmdtiles.png"));
//pmd-based wall corners
pmdtlc = pmdtiles.getSubimage(5, 5, 50, 50);
pmdtrc = pmdtiles.getSubimage(225, 5, 50, 50);
pmdblc = pmdtiles.getSubimage(5, 170, 50, 50);
pmdbrc = pmdtiles.getSubimage(225, 170, 50, 50);
//pmd-based walls(w/varients)
pmdtw1 = pmdtiles.getSubimage(60, 5, 50, 50);
pmdtw2 = pmdtiles.getSubimage(115, 5, 50, 50);
pmdtw3 = pmdtiles.getSubimage(170, 5, 50, 50);
pmdlw1 = pmdtiles.getSubimage(5, 60, 50, 50);
pmdlw2 = pmdtiles.getSubimage(5, 115, 50, 50);
pmdrw1 = pmdtiles.getSubimage(225, 60, 50, 50);
pmdrw2 = pmdtiles.getSubimage(225, 115, 50, 50);
pmdbw1 = pmdtiles.getSubimage(170, 170, 50, 50);
//pmd-based floors(1-9)
pmdtlf = pmdtiles.getSubimage(289, 5, 50, 50);
pmdtmf = pmdtiles.getSubimage(344, 5, 50, 50);
pmdtrf = pmdtiles.getSubimage(399, 5, 50, 50);
pmdmlf = pmdtiles.getSubimage(289, 60, 50, 50);
pmdflr_base = pmdtiles.getSubimage(60, 60, 50, 50);
pmdmrf = pmdtiles.getSubimage(399, 60, 50, 50);
pmdblf = pmdtiles.getSubimage(289, 115, 50, 50);
pmdbmf = pmdtiles.getSubimage(344, 115, 50, 50);
pmdbrf = pmdtiles.getSubimage(399, 115, 50, 50);
txtremode = 112109100;
}
catch (IOException el) {
el.printStackTrace();
}
while(true){
repaint();
try {
Thread.sleep(20);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
public void keyPressed(KeyEvent e) {
if(e.getKeyCode() ==37){
left = true;
}
if(e.getKeyCode() ==38){
up = true;
}
if(e.getKeyCode() ==39){
right = true;
}
if(e.getKeyCode() ==40){
down = true;
}
}
public void keyReleased(KeyEvent e) {
if(e.getKeyCode() == 37){
left = false;
}
if(e.getKeyCode() == 38){
up = false;
counter2 = 4;
}
if(e.getKeyCode() == 39){
right = false;
}
if(e.getKeyCode() == 40){
down = false;
}
}
public void keyTyped(KeyEvent e) {
}
}
答案 0 :(得分：0)
在您的情况下，您在使用applet时不需要 main 方法。
您可以尝试执行以下操作：
编译代码
javac gameloop.java javac -cp。 main.java
将代码作为applet运行
appletviewer main.class
确保所有文件到位（wall.png，floor.png等）
如果您希望能够通过 java 命令运行 main.java ，则需要添加 public static void main（String [ ] arg）进入它并确保创建 main 对象并调用它的 init 方法。