linux下java问题

张恨水 · 发表于 2003-5-20 14:04:36

我在windows下编译通过的java程序要怎么修改才能在linux下编译,我用gcj总是出错.应该是代码的问题.

spriteland · 发表于 2003-5-20 16:28:10

在WIN下您是用哪家的JAVA来编译的?

如果是SUN的JDK的话一般来说只要WIN下成功了在LINUX下也没问题的

kevinwzh · 发表于 2003-5-20 17:34:35

please put on your source code!

张恨水 · 发表于 2003-5-21 09:28:12

我就是用的javac编译的,是一个applet程序,下面是代码

import java.awt.*;
import java.awt.event.*;
import java.applet.*;

class People extends Button implements FocusListener
{
Rectangle rect=null;
int left_x,left_y;
int width,height;
String name; int number;
People(int number,String s,int x,int y,int w,int h,HuaRongRoad road)
{
super(s);
name=s;this.number=number;
left_x=x;left_y=y;
width=w;height=h;
setBackground(Color.yellow);
road.add(this);
addKeyListener(road);
setBounds(x,y,w,h);
addFocusListener(this);
rect=new Rectangle(x,y,w,h);
}
public void focusGained(FocusEvent e)
{
setBackground(Color.red);
}
public void focusLost(FocusEvent e)
{
setBackground(Color.yellow);
}
}
public class HuaRongRoad extends Applet implements KeyListener,ActionListener
{
People people[]=new People[10];
Rectangle left,right,above ,below;
Button restart=new Button("重新开始");
public void init()
{
setLayout(null);
add(restart);
restart.setBounds(5,5,80,25);
restart.addActionListener(this);
people[0]=new People(0,"曹操",104,54,100,100,this);
people[1]=new People(1,"关羽",104,154,100,50,this);
people[2]=new People(2,"张飞",54, 154,50,100,this);
people[3]=new People(3,"刘备",204,154,50,100,this);
people[4]=new People(4,"张辽",54, 54, 50,100,this);
people[5]=new People(5,"曹仁",204, 54, 50,100,this);
people[6]=new People(6,"兵",54,254,50,50,this);
people[7]=new People(7,"兵",204,254,50,50,this);
people[8]=new People(8,"兵",104,204,50,50,this);
people[9]=new People(9,"兵",154,204,50,50,this);
people[9].requestFocus();
left=new Rectangle(49,49,5,260);
people[0].setForeground(Color.green);
right=new Rectangle(254,49,5,260);
above=new Rectangle(49,49,210,5);
below=new Rectangle(49,304,210,5);
}
public void paint(Graphics g)
{
g.setColor(Color.blue);
g.fillRect(49,49,5,260);
g.fillRect(254,49,5,260);
g.fillRect(49,49,210,5);
g.fillRect(49,304,210,5);
g.drawString("点击相应的人物,用上下左右箭头移动",100,20);
g.setColor(Color.red);
g.drawString("使曹操到达此处",110,330);
}
public void keyPressed(KeyEvent e)
{
People man=(People)e.getSource();
man.rect.setLocation(man.getBounds().x, man.getBounds().y);
if(e.getKeyCode()==KeyEvent.VK_DOWN)
{
man.left_y=man.left_y+50;
man.setLocation(man.left_x,man.left_y);
man.rect.setLocation(man.left_x,man.left_y);
for(int i=0;i<10;i++)
{
if((man.rect.intersects(people.rect))&&(man.number!=i))
{
man.left_y=man.left_y-50;
man.setLocation(man.left_x,man.left_y);
man.rect.setLocation(man.left_x,man.left_y);
}
}
if(man.rect.intersects(below))
{
man.left_y=man.left_y-50;
man.setLocation(man.left_x,man.left_y);
man.rect.setLocation(man.left_x,man.left_y);
}
}
if(e.getKeyCode()==KeyEvent.VK_UP)
{
man.left_y=man.left_y-50;
man.setLocation(man.left_x,man.left_y);
man.rect.setLocation(man.left_x,man.left_y);
for(int i=0;i<10;i++)
{
if((man.rect.intersects(people.rect))&&(man.number!=i))
{
man.left_y=man.left_y+50;
man.setLocation(man.left_x,man.left_y);
man.rect.setLocation(man.left_x,man.left_y);
}
}
if(man.rect.intersects(above))
{
man.left_y=man.left_y+50;
man.setLocation(man.left_x,man.left_y);
man.rect.setLocation(man.left_x,man.left_y);
}
}
if(e.getKeyCode()==KeyEvent.VK_LEFT)
{
man.left_x=man.left_x-50;
man.setLocation(man.left_x,man.left_y);
man.rect.setLocation(man.left_x,man.left_y);
for(int i=0;i<10;i++)
{
if((man.rect.intersects(people.rect))&&(man.number!=i))
{
man.left_x=man.left_x+50;
man.setLocation(man.left_x,man.left_y);
man.rect.setLocation(man.left_x,man.left_y);
}
}
if(man.rect.intersects(left))
{
man.left_x=man.left_x+50;
man.setLocation(man.left_x,man.left_y);
man.rect.setLocation(man.left_x,man.left_y);
}
}
if(e.getKeyCode()==KeyEvent.VK_RIGHT)
{
man.left_x=man.left_x+50;
man.setLocation(man.left_x,man.left_y);
man.rect.setLocation(man.left_x,man.left_y);
for(int i=0;i<10;i++)
{
if((man.rect.intersects(people.rect))&&(man.number!=i))
{
man.left_x=man.left_x-50;
man.setLocation(man.left_x,man.left_y);
man.rect.setLocation(man.left_x,man.left_y);
}
}
if(man.rect.intersects(right))
{
man.left_x=man.left_x-50;
man.setLocation(man.left_x,man.left_y);
man.rect.setLocation(man.left_x,man.left_y);
}
}
}
public void keyTyped(KeyEvent e)
{
}
public void keyReleased(KeyEvent e)
{
}
public void actionPerformed(ActionEvent e)
{
this.removeAll();
this.init();
}
}

狂客 · 发表于 2003-5-21 09:36:21

华容道？
呵呵，我在学java，但还没有看到编程。还在学习概念。

wsm · 发表于 2003-5-21 10:04:55

错误信息是什么简单的看代码来说有可能是不支持中文的问题（你居然还把中文给写进去了...）

Aiolian · 发表于 2003-5-21 10:08:18

dos2unix yourjavafilename yourjavafilename
很可能java文件是windows格式的，所以编译不通过
一般来说只要windows下编译通过的代码，linux不可能编译通不过的

张恨水 · 发表于 2003-5-21 19:01:33

错误代码是：
[root@localhost Random]# gcj HuaRongRoad.java
/usr/lib/gcc-lib/i386-redhat-linux/3.2.2/../../../crt1.o(.text+0x1

: In function `_start':
../sysdeps/i386/elf/start.S:77: undefined reference to `main'
collect2: ld returned 1 exit status

wsm · 发表于 2003-5-21 19:33:17

这错误信息怎么看都不像是java的阿... 你为什么不用javac编译呢？

pandaisme · 发表于 2003-5-21 20:52:25

我知道了,是JAVA APPLET,写个HTML文件包含APPLET声明候用APPLETVIEWER来运行久可以了

spriteland · 发表于 2003-5-22 11:11:46

用javac来编译楼主的程序不会有任何出错信息的啦
编译完成后写一个HTML来执行就好了...
我写了一个如下:
[code:1]
<html>
  <head>
   <title>HuaRongRoad Test</title>
  </head>
  <body>
   <h1>HuaRongRoad Test</h1>
   <hr>
   <applet code=HuaRongRoad.class width=400 height=400></applet>
   <hr>
   <a href="HuaRongRoad.java">The source</a>.
  </body>
</html>
[/code:1]

goldedge · 发表于 2003-5-25 14:35:46

<html>
  <head>
   <title>HuaRongRoad Test</title>
  </head>
  <body>
   <h1>HuaRongRoad Test</h1>
   <hr>
   <applet code=HuaRongRoad.class width=400 height=400></applet>
   <hr>
   <a href="HuaRongRoad.java">The source</a>.
  </body>
</html>

把APPLET嵌入到html中啊

goldedge · 发表于 2003-5-25 14:37:31

我对java理解较浅,世面上java的编辑器有很多,到底有什么区别啊?

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linux下java问题

先试试dos2unix

我知道了,是JAVA APPLET,写个HTML文件