「来回运动java」来回运动机械原理图视频
本篇文章给大家谈谈来回运动java，以及来回运动机械原理图视频对应的知识点，希望对各位有所帮助，不要忘了收藏本站喔。
本文目录一览：
- 1、编写JAVA程序。一个球在四边的框里运动，碰到边就反弹，设置开始和结束按钮。非常感谢
- 2、JAVA 编辑 小球在一个框里做连续的碰撞运动
- 3、怎样实现java文字左右来回移动？
- 4、JAVA用repaint方法在窗格内实现小球的来回碰撞，怎么在窗格边缘改变小球的运动方向呢？
编写JAVA程序。一个球在四边的框里运动，碰到边就反弹，设置开始和结束按钮。非常感谢
/*
* 一个在窗体中来回运动的圆.java
*
* Created on 2005年10月5日, 下午1:02
*
* To change this template, choose Tools | Options and locate the template under
* the Source Creation and Management node. Right-click the template and choose
* Open. You can then make changes to the template in the Source Editor.
*/
package javaapplication1;
import java.applet.Applet;
import java.awt.Color;
import java.awt.Event;
import java.awt.Graphics;
import java.applet.*;
import java.awt.*;
import java.math.*;
/**
*
* @author Bachelorlrz
*/
public class 在窗体中来回运动的圆 extends java.applet.Applet implements java.lang.Runnable {
int cx,cy,c1x,c1y; //圆的坐标
int cw,ch; //圆的宽高
int bx,by,bw,bh; //背景的坐标和宽高
int dx,dx1; //圆的运动
int r,rx,ry; //圆的半径和位置
int r1,r1x,r1y;
Thread u_thread;
/** Initialization method that will be called after the applet is loaded
* into the browser.
*/
public void init() {
rx=150; ry=160;
bw=500; bh=400;
r1x=bw/2-cw*2; r1y=bh/2-ch;
r=60; r1=200;
cx =rx; cy =ry;
c1x=r1x; c1y=r1y;
cw=30; ch=30;
bx=2; by=2;
dx=1; dx1=2;
// TODO start asynchronous download of heavy resources
}
// TODO overwrite start(), stop() and destroy() methods
public void update(java.awt.Graphics g) {
super.paint(g);
g.setColor(Color.red);
g.drawRect(bx,by,bw,bh);
g.setColor(Color.BLACK);
g.fillRect(bx+2,by+2,bw-4,bh-4);
g.drawString("在窗体中来回运动的圆", bw/2-60, bh/2);
if (cxrx-r || cxrx+r) {
dx = -dx;
}
if (c1xr1x-r1 || c1xr1x+r1) {
dx1 = -dx1;
}
cx =cx+dx;
cy =(int)(dx*Math.sqrt(r*r-(cx-rx)*(cx-rx)))+ry;
c1x =c1x+dx1;
c1y =(int)(dx1/2*Math.sqrt(r1*r1-(c1x-r1x)*(c1x-r1x))/2);
// g.drawArc(cx, cy, cw, ch, 0, 360);
for(int i=0;i8;i++){
if (i%5 == 0){
g.setColor(Color.black);
}else if ( i%5== 1) {
g.setColor(Color.GREEN);
}else if(i%5==2){
g.setColor(Color.RED);
}else if( i%5 ==3){
g.setColor(Color.pink);
}else {
g.setColor(Color.orange);
}
g.drawLine(bx,by, cx+10,cy+i+10);
g.drawLine(bx+bw,by+bh,cx+10,cy+i+10);
g.drawLine(bx+bw,by, cx+10,cy+i+10);
g.drawLine(bx,by+bh, cx+10,cy+i+10);
g.drawLine(bx,by,-cx+bw-bx-cw+10,cy+i+10);
g.drawLine(bx+bw,by+bh,-cx+bw-bx-cw+10,cy+i+10);
g.drawLine(bx+bw,by,-cx+bw-bx-cw+10,cy+i+10);
g.drawLine(bx,by+bh,-cx+bw-bx-cw+10,cy+i+10);
g.drawLine(bx,by, c1x+10,c1y+r1y+i+10);
g.drawLine(bx+bw,by+bh,c1x+10,c1y+r1y+i+10);
g.drawLine(bx+bw,by, c1x+10,c1y+r1y+i+10);
g.drawLine(bx,by+bh, c1x+10,c1y+r1y+i+10);
g.drawLine(bx,by, r1x+r1+cw-c1x+10,-c1y+r1y+i+10);
g.drawLine(bx+bw,by+bh,r1x+r1+cw-c1x+10,-c1y+r1y+i+10);
g.drawLine(bx+bw,by, r1x+r1+cw-c1x+10,-c1y+r1y+i+10);
g.drawLine(bx,by+bh,r1x+r1+cw-c1x+10,-c1y+r1y+i+10);
g.drawArc(cx+i, cy+i, cw-i*2, ch-i*2, 0, 360);
g.drawArc(-cx+bw-bx-cw+i, cy+i, cw-i*2, ch-i*2, 0, 360);
g.drawArc(c1x+i, c1y+r1y+i, cw-i*2, ch-i*2, 0, 360);
g.drawArc(r1x+r1+cw-c1x+i, -c1y+r1y+i, cw-i*2, ch-i*2, 0, 360);
}
}
public void start(){
if (u_thread == null)
{
u_thread = new Thread(this);
u_thread.start();
}
}
public void run() {
while(true){
repaint();
try{
u_thread.sleep(10);
}
catch (InterruptedException e){
return;
}
}
}
}
JAVA 编辑 小球在一个框里做连续的碰撞运动
/*
* 一个在窗体中来回运动的圆.java
*
* Created on 2005年10月5日, 下午1:02
*
* To change this template, choose Tools | Options and locate the template under
* the Source Creation and Management node. Right-click the template and choose
* Open. You can then make changes to the template in the Source Editor.
*/
package javaapplication1;
import java.applet.Applet;
import a href=";tn=44039180_cprfenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1Y3uhPWrjRdmHTdmWR4nWn40ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EPHRYnHmYnHRYPW6knH63P1nz" target="_blank" class="baidu-highlight"java.awt.Color/a;
import java.awt.Event;
import java.awt.Graphics;
import java.applet.*;
import java.awt.*;
import java.math.*;
/**
*
* @author Bachelorlrz
*/
public class 在窗体中来回运动的圆 extends java.applet.Applet implements java.lang.Runnable {
int cx,cy,c1x,c1y; //圆的坐标
int cw,ch; //圆的宽高
int bx,by,bw,bh; //背景的坐标和宽高
int dx,dx1; //圆的运动
int r,rx,ry; //圆的半径和位置
int r1,r1x,r1y;
Thread u_thread;
/** Initialization method that will be called after the applet is loaded
* into the browser.
*/
public void init() {
rx=150; ry=160;
bw=500; bh=400;
r1x=bw/2-cw*2; r1y=bh/2-ch;
r=60; r1=200;
cx =rx; cy =ry;
c1x=r1x; c1y=r1y;
cw=30; ch=30;
bx=2; by=2;
dx=1; dx1=2;
// TODO start asynchronous download of heavy resources
}
// TODO overwrite start(), stop() and destroy() methods
public void update(java.awt.Graphics g) {
super.paint(g);
g.setColor(Color.red);
g.drawRect(bx,by,bw,bh);
g.setColor(Color.BLACK);
g.fillRect(bx+2,by+2,bw-4,bh-4);
g.drawString("在窗体中来回运动的圆", bw/2-60, bh/2);
if (cxrx-r || cxrx+r) {
dx = -dx;
}
if (c1xr1x-r1 || c1xr1x+r1) {
dx1 = -dx1;
}
cx =cx+dx;
cy =(int)(dx*Math.sqrt(r*r-(cx-rx)*(cx-rx)))+ry;
c1x =c1x+dx1;
c1y =(int)(dx1/2*Math.sqrt(r1*r1-(c1x-r1x)*(c1x-r1x))/2);
// g.drawArc(cx, cy, cw, ch, 0, 360);
for(int i=0;i8;i++){
if (i%5 == 0){
g.setColor(Color.black);
}else if ( i%5== 1) {
g.setColor(Color.GREEN);
}else if(i%5==2){
g.setColor(Color.RED);
}else if( i%5 ==3){
g.setColor(Color.pink);
}else {
g.setColor(Color.orange);
}
g.drawLine(bx,by, cx+10,cy+i+10);
g.drawLine(bx+bw,by+bh,cx+10,cy+i+10);
g.drawLine(bx+bw,by, cx+10,cy+i+10);
g.drawLine(bx,by+bh, cx+10,cy+i+10);
g.drawLine(bx,by,-cx+bw-bx-cw+10,cy+i+10);
g.drawLine(bx+bw,by+bh,-cx+bw-bx-cw+10,cy+i+10);
g.drawLine(bx+bw,by,-cx+bw-bx-cw+10,cy+i+10);
g.drawLine(bx,by+bh,-cx+bw-bx-cw+10,cy+i+10);
g.drawLine(bx,by, c1x+10,c1y+r1y+i+10);
g.drawLine(bx+bw,by+bh,c1x+10,c1y+r1y+i+10);
g.drawLine(bx+bw,by, c1x+10,c1y+r1y+i+10);
g.drawLine(bx,by+bh, c1x+10,c1y+r1y+i+10);
g.drawLine(bx,by, r1x+r1+cw-c1x+10,-c1y+r1y+i+10);
g.drawLine(bx+bw,by+bh,r1x+r1+cw-c1x+10,-c1y+r1y+i+10);
g.drawLine(bx+bw,by, r1x+r1+cw-c1x+10,-c1y+r1y+i+10);
g.drawLine(bx,by+bh,r1x+r1+cw-c1x+10,-c1y+r1y+i+10);
g.drawArc(cx+i, cy+i, cw-i*2, ch-i*2, 0, 360);
g.drawArc(-cx+bw-bx-cw+i, cy+i, cw-i*2, ch-i*2, 0, 360);
g.drawArc(c1x+i, c1y+r1y+i, cw-i*2, ch-i*2, 0, 360);
g.drawArc(r1x+r1+cw-c1x+i, -c1y+r1y+i, cw-i*2, ch-i*2, 0, 360);
}
}
public void start(){
if (u_thread == null)
{
u_thread = new Thread(this);
u_thread.start();
}
}
public void run() {
while(true){
repaint();
try{
u_thread.sleep(10);
}
catch (InterruptedException e){
return;
}
}
}
}
怎样实现java文字左右来回移动？
创建一个线程，然后在JLabel中，获取文字，在文字的前后不断的加减空格，同时不断的刷新页面。
不过貌似swing对线程的支持不太好。有些空间不是线程安全的。
JAVA用repaint方法在窗格内实现小球的来回碰撞，怎么在窗格边缘改变小球的运动方向呢？
public class DrawBall extends JFrame {
int x, y, width, height;
Color c;
int incX = 10;//X方向增量
int incY = 10;//Y方向增量
public DrawBall() {
super("寂寞高手不寂寞");
setSize(800, 600);
setVisible(true);
x = 0;
y = 0;
width = height = 50;
c = new Color(255, 0, 0);
}
public static void main(String[] args) {
DrawBall a = new DrawBall();
}
public void paint(Graphics g) {
Container pane = getContentPane();
Graphics pg = pane.getGraphics();
pg.setColor(Color.WHITE);
pg.fillRect(0, 0, pane.getWidth(), pane.getHeight());
//从这里开始改变小球的运动方向
if (x+width pane.getWidth() || x 0) {//X边界判断
incX *= -1; //增量方向反转
}
if (y+height pane.getHeight() || y 0) {//Y边界判断
incY *= -1;//增量方向反转
}
x = x + incX;
y = y + incY;
pg.setColor(c);
pg.fillOval(x, y, width, height);
try {
Thread.sleep(100);
} catch (InterruptedException E) {
};
repaint();
}
}
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