请帮忙看看这个程序(在线等) public void start(){ sowSeed(); if(imageThread==null){ imageThread=new Thread(this); imageThread.start(); //这儿少了一个} } 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 import java.awt.*;import java.applet.*;import java.util.*;import java.io.*;public class QixTest extends Applet implements Runnable{ Thread imageThread=null; Random rnd=new Random(); Rectangle bounceRect; Rectangle colorBounce; BouncyPoint endPoint1,endPoint2; BouncyPoint R_Bouncer,G_Bouncer,B_Bouncer; int x1,x2,y1,y2; public void init(){ bounceRect=getBounds(); bounceRect.x=0; bounceRect.y=0; } public void start(){ sowSeed(); if(imageThread==null){ imageThread=new Thread(this); imageThread.start(); } } public void stop() { if((imageThread!=null)&&imageThread.isAlive()) { imageThread.stop(); } imageThread=null; } public void run() { int i=0; Thread me=Thread.currentThread(); me.sePriority(Thread.MIN_PRIORITY); while(imageThread==me) { repaint(); try{ Thread.sleep(10); }catch(InterruptedExpection e){} i++; if(i==1000){ sowSeed(); i=0; } } } public void update(Graphics g){ endPoint1.carryOnBouncing(); endPoint2.carryOnBouncing(); R_Bouncer.carryOnBouncing(); G_Bouncer.carryOnBouncing(); B_Bouncer.carryOnBouncing(); g.setColor(new Color(R_Bouncer.x,G_Bouncer.x,B_Bouncer.x)); g.drawLine(endPoint.x,endPoint.y,endPoint2.x,endPoint2.y); } public void sowSeed(){ x1=4+((rnd.nextInt()&1023)%(bounceRect.width-8)); x2=4+((rnd.nextInt()&1023)%(bounceRect.width-8)); y1=4+((rnd.nextInt()&1023)%(bounceRect.height-8)); y2=4+((rnd.nextInt()&1023)%(bounceRect.height-8)); endPoint1=new BouncyPoint(bounceRect,x1,y1,-1.0,1,5); colorBounce=new Rectangle(0,0,255,255); R_Bouncer=new BouncyPoint(colorBounce,200,0,-1.0,0.0); B_Bouncer=new BouncyPoint(colorBounce,200,0,-2.0,0.0); } class BouncyPoint extends Point{ Rectangle boundingBox; double x_direction; double y_direction; BouncyPoint(Rectangle limits,int startx,int starty,double dx,double dy) { super(startx,starty); boundingBox=limits; x_direction=dx; y_direction=dy; } public void carryOnBouncing() { x+=(int)x_direction; if(!boundingBox.contains(x,y)){ y-=(int)y_direction; y_direction=-y_direction; } } } }你看看现在可以了吗,我给你找出来两个错误 import java.awt.*;import java.applet.*;import java.util.*;import java.io.*;public class QixTest extends Applet implements Runnable{ Thread imageThread=null; Random rnd=new Random(); Rectangle bounceRect; Rectangle colorBounce; BouncyPoint endPoint;//加这1个变量 BouncyPoint endPoint1,endPoint2; BouncyPoint R_Bouncer,G_Bouncer,B_Bouncer; int x1,x2,y1,y2; public void init(){ bounceRect=getBounds(); bounceRect.x=0; bounceRect.y=0; } public void start(){ sowSeed(); if(imageThread==null){ imageThread=new Thread(this); imageThread.start(); } } public void stop() { if((imageThread!=null)&&imageThread.isAlive()) { imageThread.stop(); } imageThread=null; } public void run() { int i=0; Thread me=Thread.currentThread(); //me.sePriority(Thread.MIN_PRIORITY); while(imageThread==me) { repaint(); try{ Thread.sleep(10); }catch(InterruptedException e){}//Expection 写错了 i++; if(i==1000){ sowSeed(); i=0; } } } public void update(Graphics g){ endPoint1.carryOnBouncing(); endPoint2.carryOnBouncing(); R_Bouncer.carryOnBouncing(); G_Bouncer.carryOnBouncing(); B_Bouncer.carryOnBouncing(); g.setColor(new Color(R_Bouncer.x,G_Bouncer.x,B_Bouncer.x)); g.drawLine(endPoint.x,endPoint.y,endPoint2.x,endPoint2.y);// } public void sowSeed(){ x1=4+((rnd.nextInt()&1023)%(bounceRect.width-8)); x2=4+((rnd.nextInt()&1023)%(bounceRect.width-8)); y1=4+((rnd.nextInt()&1023)%(bounceRect.height-8)); y2=4+((rnd.nextInt()&1023)%(bounceRect.height-8)); endPoint1=new BouncyPoint(bounceRect,x1,y1,-1.0,1,5);//还剩下一个错误了,你自己差一下这,好象是你的参数不对。 colorBounce=new Rectangle(0,0,255,255); R_Bouncer=new BouncyPoint(colorBounce,200,0,-1.0,0.0); B_Bouncer=new BouncyPoint(colorBounce,200,0,-2.0,0.0); } class BouncyPoint extends Point{ Rectangle boundingBox; double x_direction; double y_direction; BouncyPoint(Rectangle limits,int startx,int starty,double dx,double dy) { super(startx,starty); boundingBox=limits; x_direction=dx; y_direction=dy; } public void carryOnBouncing() { x+=(int)x_direction; if(!boundingBox.contains(x,y)){ y-=(int)y_direction; y_direction=-y_direction; } } } }//少一个}你看看吧,就剩下一个错误了,我在程序里面注释了你看看吧,可能是参数不对。 import java.awt.*;import java.applet.*;import java.util.*;import java.io.*;public class QixTest extends Applet implements Runnable{ Thread imageThread=null; Random rnd=new Random(); Rectangle bounceRect; Rectangle colorBounce; BouncyPoint endPoint;//加这1个变量 BouncyPoint endPoint1,endPoint2; BouncyPoint R_Bouncer,G_Bouncer,B_Bouncer; int x1,x2,y1,y2; public void init(){ bounceRect=getBounds(); bounceRect.x=0; bounceRect.y=0; } public void start(){ sowSeed(); if(imageThread==null){ imageThread=new Thread(this); imageThread.start(); } } public void stop() { if((imageThread!=null)&&imageThread.isAlive()) { imageThread.stop(); } imageThread=null; } public void run() { int i=0; Thread me=Thread.currentThread(); //me.sePriority(Thread.MIN_PRIORITY); while(imageThread==me) { repaint(); try{ Thread.sleep(10); }catch(InterruptedException e){}//Expection 写错了 i++; if(i==1000){ sowSeed(); i=0; } } } public void update(Graphics g){ endPoint1.carryOnBouncing(); endPoint2.carryOnBouncing(); R_Bouncer.carryOnBouncing(); G_Bouncer.carryOnBouncing(); B_Bouncer.carryOnBouncing(); g.setColor(new Color(R_Bouncer.x,G_Bouncer.x,B_Bouncer.x)); g.drawLine(endPoint.x,endPoint.y,endPoint2.x,endPoint2.y);// } public void sowSeed(){ x1=4+((rnd.nextInt()&1023)%(bounceRect.width-8)); x2=4+((rnd.nextInt()&1023)%(bounceRect.width-8)); y1=4+((rnd.nextInt()&1023)%(bounceRect.height-8)); y2=4+((rnd.nextInt()&1023)%(bounceRect.height-8)); endPoint1=new BouncyPoint(bounceRect,x1,y1,-1.0,1,5);//还剩下一个错误了,你自己差一下这,好象是你的参数不对。 colorBounce=new Rectangle(0,0,255,255); R_Bouncer=new BouncyPoint(colorBounce,200,0,-1.0,0.0); B_Bouncer=new BouncyPoint(colorBounce,200,0,-2.0,0.0); } class BouncyPoint extends Point{ Rectangle boundingBox; double x_direction; double y_direction; BouncyPoint(Rectangle limits,int startx,int starty,double dx,double dy) { super(startx,starty); boundingBox=limits; x_direction=dx; y_direction=dy; } public void carryOnBouncing() { x+=(int)x_direction; if(!boundingBox.contains(x,y)){ y-=(int)y_direction; y_direction=-y_direction; } } } }//少一个}你看看吧,就剩下一个错误了,我在程序里面注释了你看看吧,可能是参数不对。 这个类BouncyPoint我没有查到,可能是这个类的参数,你给的不对。 BouncyPoint(x1,y1,-1.0,1,5);BouncyPoint(Rectangle limits,int startx,int starty,double dx,double dy)你看看,你在程序里定义的构造器和你用的BouncyPoint(x1,y1,-1.0,1,5);参数类型也不对啊,问题终于找到了,累死我了。这下知道怎么做了吧。如果你一定要用BouncyPoint(x1,y1,-1.0,1,5);这样的构造器初始化你的类,那就要在BouncyPoint类里面自己在加一个如你BouncyPoint(x1,y1,-1.0,1,5);这样形式的构造器 问题解决了﹐多谢楼上的老兄。请大家再给几种解决方案﹐让我学习学习。我刚学java不久﹐现在学到了applet﹐可是总是有一些问题自己还不能解决。哪位能不能把自己觉得经典的applet程序发出来让我学习一下﹐能有注释就更好了。谢谢﹗ 为什幺这个程序编译通过﹐而在applet下却不能显示结果﹖ 是不是你用的ie啊,在ie5。0以上不支持applet,安装一个jdk1.4吧 我用的是jcreator﹐你说的在jdk1.4下怎幺实现呢﹖请指教。我在jcreator下运行过这个applet,成功了﹐可是上面说的那个却不行。为什幺啊﹖ 我用的是jcreator﹐你说的在jdk1.4下怎幺实现呢﹖请指教。我在jcreator下运行过这个applet,成功了﹐可是上面说的那个却不行。为什幺啊﹖ 我用的是jcreator﹐你说的在jdk1.4下怎幺实现呢﹖请指教。我在jcreator下运行过这个applet,成功了﹐可是上面说的那个却不行。为什幺啊﹖ 安装后就可以了,它自动带一个ie下运行applet的插件 按装jdk1。4,就可以了,他带个插件是专门针对applet。 安裝后怎么使用呢﹖上面的那個程序怎么在jcreator的applet下不能運行啊﹖著個卻可以啊import java.applet.Applet;import java.awt.Graphics;public class Simple extends Applet{ StringBuffer buffer=new StringBuffer(); public void init() { addItem("12345"); } public void start() { addItem("67890"); } public void stop() { addItem("Stopping..."); } public void destory() { addItem("Preparing for unloading..."); } void addItem(String newWord) { System.out.println(newWord); buffer.append(newWord); repaint(); } public void paint(Graphics gVar) { gVar.drawRect(0,0,getSize().width-1,getSize().height-1); gVar.drawString(buffer.toString(),5,15); }}結果 1234567890 安裝后怎么使用呢﹖上面的那個程序怎么在jcreator的applet下不能運行啊﹖著個卻可以啊import java.applet.Applet;import java.awt.Graphics;public class Simple extends Applet{ StringBuffer buffer=new StringBuffer(); public void init() { addItem("12345"); } public void start() { addItem("67890"); } public void stop() { addItem("Stopping..."); } public void destory() { addItem("Preparing for unloading..."); } void addItem(String newWord) { System.out.println(newWord); buffer.append(newWord); repaint(); } public void paint(Graphics gVar) { gVar.drawRect(0,0,getSize().width-1,getSize().height-1); gVar.drawString(buffer.toString(),5,15); }}結果 1234567890 谁深层解析下java 关键字 mysql 中 插入500条测试 数据 用JAVA求出2組日期相差多少天? 有意思的小算法,谁把代码贴上??? 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import java.applet.*;
import java.util.*;
import java.io.*;
public class QixTest extends Applet implements Runnable{
Thread imageThread=null;
Random rnd=new Random();
Rectangle bounceRect;
Rectangle colorBounce;
BouncyPoint endPoint1,endPoint2;
BouncyPoint R_Bouncer,G_Bouncer,B_Bouncer;
int x1,x2,y1,y2;
public void init(){
bounceRect=getBounds();
bounceRect.x=0;
bounceRect.y=0;
}
public void start(){
sowSeed();
if(imageThread==null){
imageThread=new Thread(this);
imageThread.start();
}
}
public void stop()
{
if((imageThread!=null)&&imageThread.isAlive())
{
imageThread.stop();
}
imageThread=null;
}
public void run()
{
int i=0;
Thread me=Thread.currentThread();
me.sePriority(Thread.MIN_PRIORITY);
while(imageThread==me)
{
repaint();
try{
Thread.sleep(10);
}catch(InterruptedExpection e){}
i++;
if(i==1000){
sowSeed();
i=0;
}
}
}
public void update(Graphics g){
endPoint1.carryOnBouncing();
endPoint2.carryOnBouncing();
R_Bouncer.carryOnBouncing();
G_Bouncer.carryOnBouncing();
B_Bouncer.carryOnBouncing();
g.setColor(new Color(R_Bouncer.x,G_Bouncer.x,B_Bouncer.x));
g.drawLine(endPoint.x,endPoint.y,endPoint2.x,endPoint2.y);
}
public void sowSeed(){
x1=4+((rnd.nextInt()&1023)%(bounceRect.width-8));
x2=4+((rnd.nextInt()&1023)%(bounceRect.width-8));
y1=4+((rnd.nextInt()&1023)%(bounceRect.height-8));
y2=4+((rnd.nextInt()&1023)%(bounceRect.height-8));
endPoint1=new BouncyPoint(bounceRect,x1,y1,-1.0,1,5);
colorBounce=new Rectangle(0,0,255,255);
R_Bouncer=new BouncyPoint(colorBounce,200,0,-1.0,0.0);
B_Bouncer=new BouncyPoint(colorBounce,200,0,-2.0,0.0);
}
class BouncyPoint extends Point{
Rectangle boundingBox;
double x_direction;
double y_direction;
BouncyPoint(Rectangle limits,int startx,int starty,double dx,double dy)
{
super(startx,starty);
boundingBox=limits;
x_direction=dx;
y_direction=dy;
}
public void carryOnBouncing()
{
x+=(int)x_direction;
if(!boundingBox.contains(x,y)){
y-=(int)y_direction;
y_direction=-y_direction;
}
}
}
}
你看看现在可以了吗,我给你找出来两个错误
import java.applet.*;
import java.util.*;
import java.io.*;
public class QixTest extends Applet implements Runnable{
Thread imageThread=null;
Random rnd=new Random();
Rectangle bounceRect;
Rectangle colorBounce;
BouncyPoint endPoint;//加这1个变量
BouncyPoint endPoint1,endPoint2;
BouncyPoint R_Bouncer,G_Bouncer,B_Bouncer;
int x1,x2,y1,y2;
public void init(){
bounceRect=getBounds();
bounceRect.x=0;
bounceRect.y=0;
}
public void start(){
sowSeed();
if(imageThread==null){
imageThread=new Thread(this);
imageThread.start();
}
}
public void stop()
{
if((imageThread!=null)&&imageThread.isAlive())
{
imageThread.stop();
}
imageThread=null;
}
public void run()
{
int i=0;
Thread me=Thread.currentThread();
//me.sePriority(Thread.MIN_PRIORITY);
while(imageThread==me)
{
repaint();
try{
Thread.sleep(10);
}catch(InterruptedException e){}//Expection 写错了
i++;
if(i==1000){
sowSeed();
i=0;
}
}
}
public void update(Graphics g){
endPoint1.carryOnBouncing();
endPoint2.carryOnBouncing();
R_Bouncer.carryOnBouncing();
G_Bouncer.carryOnBouncing();
B_Bouncer.carryOnBouncing();
g.setColor(new Color(R_Bouncer.x,G_Bouncer.x,B_Bouncer.x));
g.drawLine(endPoint.x,endPoint.y,endPoint2.x,endPoint2.y);//
}
public void sowSeed(){
x1=4+((rnd.nextInt()&1023)%(bounceRect.width-8));
x2=4+((rnd.nextInt()&1023)%(bounceRect.width-8));
y1=4+((rnd.nextInt()&1023)%(bounceRect.height-8));
y2=4+((rnd.nextInt()&1023)%(bounceRect.height-8));
endPoint1=new BouncyPoint(bounceRect,x1,y1,-1.0,1,5);//还剩下一个错误了,你自己差一下这,好象是你的参数不对。
colorBounce=new Rectangle(0,0,255,255);
R_Bouncer=new BouncyPoint(colorBounce,200,0,-1.0,0.0);
B_Bouncer=new BouncyPoint(colorBounce,200,0,-2.0,0.0);
}
class BouncyPoint extends Point{
Rectangle boundingBox;
double x_direction;
double y_direction;
BouncyPoint(Rectangle limits,int startx,int starty,double dx,double dy)
{
super(startx,starty);
boundingBox=limits;
x_direction=dx;
y_direction=dy;
}
public void carryOnBouncing()
{
x+=(int)x_direction;
if(!boundingBox.contains(x,y)){
y-=(int)y_direction;
y_direction=-y_direction;
}
}
}
}//少一个}
你看看吧,就剩下一个错误了,我在程序里面注释了你看看吧,可能是参数不对。
import java.applet.*;
import java.util.*;
import java.io.*;
public class QixTest extends Applet implements Runnable{
Thread imageThread=null;
Random rnd=new Random();
Rectangle bounceRect;
Rectangle colorBounce;
BouncyPoint endPoint;//加这1个变量
BouncyPoint endPoint1,endPoint2;
BouncyPoint R_Bouncer,G_Bouncer,B_Bouncer;
int x1,x2,y1,y2;
public void init(){
bounceRect=getBounds();
bounceRect.x=0;
bounceRect.y=0;
}
public void start(){
sowSeed();
if(imageThread==null){
imageThread=new Thread(this);
imageThread.start();
}
}
public void stop()
{
if((imageThread!=null)&&imageThread.isAlive())
{
imageThread.stop();
}
imageThread=null;
}
public void run()
{
int i=0;
Thread me=Thread.currentThread();
//me.sePriority(Thread.MIN_PRIORITY);
while(imageThread==me)
{
repaint();
try{
Thread.sleep(10);
}catch(InterruptedException e){}//Expection 写错了
i++;
if(i==1000){
sowSeed();
i=0;
}
}
}
public void update(Graphics g){
endPoint1.carryOnBouncing();
endPoint2.carryOnBouncing();
R_Bouncer.carryOnBouncing();
G_Bouncer.carryOnBouncing();
B_Bouncer.carryOnBouncing();
g.setColor(new Color(R_Bouncer.x,G_Bouncer.x,B_Bouncer.x));
g.drawLine(endPoint.x,endPoint.y,endPoint2.x,endPoint2.y);//
}
public void sowSeed(){
x1=4+((rnd.nextInt()&1023)%(bounceRect.width-8));
x2=4+((rnd.nextInt()&1023)%(bounceRect.width-8));
y1=4+((rnd.nextInt()&1023)%(bounceRect.height-8));
y2=4+((rnd.nextInt()&1023)%(bounceRect.height-8));
endPoint1=new BouncyPoint(bounceRect,x1,y1,-1.0,1,5);//还剩下一个错误了,你自己差一下这,好象是你的参数不对。
colorBounce=new Rectangle(0,0,255,255);
R_Bouncer=new BouncyPoint(colorBounce,200,0,-1.0,0.0);
B_Bouncer=new BouncyPoint(colorBounce,200,0,-2.0,0.0);
}
class BouncyPoint extends Point{
Rectangle boundingBox;
double x_direction;
double y_direction;
BouncyPoint(Rectangle limits,int startx,int starty,double dx,double dy)
{
super(startx,starty);
boundingBox=limits;
x_direction=dx;
y_direction=dy;
}
public void carryOnBouncing()
{
x+=(int)x_direction;
if(!boundingBox.contains(x,y)){
y-=(int)y_direction;
y_direction=-y_direction;
}
}
}
}//少一个}
你看看吧,就剩下一个错误了,我在程序里面注释了你看看吧,可能是参数不对。
BouncyPoint(Rectangle limits,int startx,int starty,double dx,double dy)
你看看,你在程序里定义的构造器和你用的BouncyPoint(x1,y1,-1.0,1,5);
参数类型也不对啊,
问题终于找到了,累死我了。这下知道怎么做了吧。
如果你一定要用BouncyPoint(x1,y1,-1.0,1,5);这样的构造器初始化你的类,那就要在BouncyPoint类里面自己在加一个如你BouncyPoint(x1,y1,-1.0,1,5);这样形式的构造器
请大家再给几种解决方案﹐让我学习学习。我刚学java不久﹐现在学到了applet﹐可是总是有一些问题自己还不能解决。哪位能不能把自己觉得经典的applet程序发出来让我学习一下﹐能有注释就更好了。谢谢﹗
我在jcreator下运行过这个applet,成功了﹐可是上面说的那个却不行。为什幺啊﹖
我在jcreator下运行过这个applet,成功了﹐可是上面说的那个却不行。为什幺啊﹖
我在jcreator下运行过这个applet,成功了﹐可是上面说的那个却不行。为什幺啊﹖
著個卻可以啊
import java.applet.Applet;
import java.awt.Graphics;
public class Simple extends Applet
{
StringBuffer buffer=new StringBuffer();
public void init()
{
addItem("12345");
}
public void start()
{
addItem("67890");
}
public void stop()
{
addItem("Stopping...");
}
public void destory()
{
addItem("Preparing for unloading...");
}
void addItem(String newWord)
{
System.out.println(newWord);
buffer.append(newWord);
repaint();
}
public void paint(Graphics gVar)
{
gVar.drawRect(0,0,getSize().width-1,getSize().height-1);
gVar.drawString(buffer.toString(),5,15);
}
}
結果 1234567890
著個卻可以啊
import java.applet.Applet;
import java.awt.Graphics;
public class Simple extends Applet
{
StringBuffer buffer=new StringBuffer();
public void init()
{
addItem("12345");
}
public void start()
{
addItem("67890");
}
public void stop()
{
addItem("Stopping...");
}
public void destory()
{
addItem("Preparing for unloading...");
}
void addItem(String newWord)
{
System.out.println(newWord);
buffer.append(newWord);
repaint();
}
public void paint(Graphics gVar)
{
gVar.drawRect(0,0,getSize().width-1,getSize().height-1);
gVar.drawString(buffer.toString(),5,15);
}
}
結果 1234567890