实验8javaFX程序设计

1、山西大学计算机与信息技术学院实验报告姓 名苏文杰学 号201601001026专业班级计算机科学与技术三班 课程名称 java实验实验日期2017/12/4 成 绩指导教师杨陟卓 批改日期实验名称实验 8 javafx程序设计一、实验目的掌握常用gui控制组件及其事件处理。 二、实验内容1编程包含一个标签和一个按钮，单击按钮时，标签的内容在“你好”和“再见”之间切换。分别用本类（该类自身），外部类，内部类，匿名内部类，以及lambda表达式完成。程序代码：package sd8;import java.awt.gridlayout;import java.awt.event.mouseeven

2、t;import java.awt.event.mouselistener;import javax.swing.jbutton;import javax.swing.jframe;import javax.swing.jlabel;public class test extends jframe implements mouselistener private jlabel label = new jlabel("你好");private jbutton btn = new jbutton("ok");public test()setlayout(ne

3、w gridlayout(2, 1);setbounds(200, 200, 250, 250);add(label);add(btn);btn.addmouselistener(this);super.setdefaultcloseoperation(jframe.exit_on_close);setvisible(true);pack();public static void main(string args) new test();new thread() -> new test().start();public void mouseclicked(mouseevent e) if

4、(label.gettext().equals("你好")label.settext("再见");elselabel.settext("你好");public void mouseentered(mouseevent e) public void mouseexited(mouseevent e) public void mousepressed(mouseevent e) public void mousereleased(mouseevent e) 运行结果贴图:2编程包含一个文本框和一个文本区域，文本框内容改变时，将文本框中的内

5、容显示在文本区域中；在文本框中按回车键时，清空文本区域的内容。程序代码：package sd2;import java.awt.color; import java.awt.gridlayout; import java.awt.event.keyevent; import java.awt.event.keylistener; import javax.swing.jframe; import javax.swing.jpanel; import javax.swing.jtextarea; import javax.swing.jtextfield; import javax.swing.

6、border.titledborder;public class showtext extends jframe private static final long serialversionuid = 1l; private jtextfield text1; private jtextarea text2; public showtext() super("tetx show"); jpanel p1 = new jpanel(); p1.setbackground(color.white); p1.setborder(new titledborder("文本

7、框"); text1 = new jtextfield(10); text1.addkeylistener(new textlistener(); p1.add(text1); jpanel p2 = new jpanel(); p2.setbackground(color.white); p2.setborder(new titledborder("文本区域"); text2 = new jtextarea("原文本", 10, 10); text2.setlinewrap(true); text2.seteditable(false); p

8、2.add(text2); setlayout(new gridlayout(2, 1, 0, 5); add(p1); add(p2); setsize(200, 200); setvisible(true); this.setlocationrelativeto(null); setdefaultcloseoperation(jframe.exit_on_close); private class textlistener implements keylistener public void keypressed(keyevent e) public void keyreleased(ke

9、yevent e) if (e.getkeychar() != keyevent.vk_enter) text2.settext(text1.gettext(); public void keytyped(keyevent e) if (e.getkeychar() = keyevent.vk_enter) text2.settext(null); public static void main(string args) jframe frame = new showtext(); 运行结果贴图:3编程包含一个复选按钮和一个普通按钮，复选按钮选中时，普通按钮的背景色为青色，未选中时为灰色。程序

10、代码：package sd3;import java.awt.color; import java.awt.gridlayout; import java.awt.event.itemevent; import java.awt.event.itemlistener; import javax.swing.jbutton; import javax.swing.jcheckbox; import javax.swing.jframe; import javax.swing.jpanel; public class changebuttoncolor extends jframe private

11、 static final long serialversionuid = 1l; private jbutton button; private jcheckbox checkbox; public changebuttoncolor() super("改变按钮颜色"); jpanel p1 = new jpanel(); p1.setbackground(color.white); setlayout(new gridlayout(2, 1); button = new jbutton("hello"); button.setsize(20, 20)

12、; button.setbackground(color.gray); p1.add(button); jpanel p2 = new jpanel(); p2.setbackground(color.blue); checkbox = new jcheckbox(); checkbox.additemlistener(new checkboxlistener(); p2.add(checkbox); add(p1); add(p2); setsize(200, 200); setvisible(true); this.setlocationrelativeto(null); setdefau

13、ltcloseoperation(jframe.exit_on_close); private class checkboxlistener implements itemlistener public void itemstatechanged(itemevent e) if (checkbox.isselected() button.setbackground(color.cyan); else button.setbackground(color.gray); public static void main(string args) changebuttoncolor b = new c

14、hangebuttoncolor(); 运行结果贴图:4编程显示当前鼠标的位置坐标。程序代码：package sd4;import java.awt.color; import java.awt.event.mouseevent; import java.awt.event.mousemotionlistener; import javax.swing.jbutton; import javax.swing.jframe; public class locatemouse extends jframe private jbutton location; public locatemouse()

15、 super("寻找鼠标位置"); location = new jbutton("显示鼠标位置"); location.setsize(20, 10); add(location); location.addmousemotionlistener(new mousemotionlistener() public void mousedragged(mouseevent e) public void mousemoved(mouseevent e) location.settext("鼠标在（" + e.getx() + "

16、," + e.gety() + ")"); ); setsize(300, 200); setlocationrelativeto(null); setvisible(true); location.setbackground(color.white); setdefaultcloseoperation(jframe.exit_on_close); public static void main(string args) locatemouse mouse = new locatemouse(); 运行结果贴图:5. 编写程序，实现使用键盘上的上下左右箭头控制界面

17、上图片的移动。移动到边界时从界面另一侧出现。移动过程中显示另一个图片，停止时恢复原来的图片。程序代码：package sd5;import java.awt.color; import java.awt.event.keyevent;import java.awt.event.keylistener; import javax.swing.imageicon;import javax.swing.jframe; import javax.swing.jlabel; import javax.swing.jpanel; public class moveimage extends jframe

18、private imageicon oneicon = new imageicon("c:users潘desktoptimg.jpg"); private imageicon twoicon = new imageicon("c:users潘picturescamera roll1.jpg"); private jlabel label; jpanel p; public moveimage() super("image移动"); setsize(500, 500); setlocationrelativeto(null); labe

19、l = new jlabel(oneicon); p = new jpanel(); setcontentpane(p); p.setlayout(null); this.addkeylistener(new panellistener(); label.setbounds(0, 0, 100, 100); p.add(label); p.setbackground(color.white); setvisible(true); setdefaultcloseoperation(jframe.exit_on_close); private class panellistener impleme

20、nts keylistener public void keypressed(keyevent e) label.seticon(twoicon); int x = label.getx(); int y = label.gety(); int w = p.getwidth(); int h = p.getheight(); if (e.getkeycode() = keyevent.vk_up) -y; if (y <= 0) y = h; label.setbounds(x, y, 100, 100); else if (e.getkeycode() = keyevent.vk_do

21、wn) +y; if (y >= h) y = 0; label.setbounds(x, y, 100, 100); else if (e.getkeycode() = keyevent.vk_left) x-; if (x <= 0) x = w; label.setbounds(x, y, 100, 100); else if (e.getkeycode() = keyevent.vk_right) x+; if (x >= w) x = 0; label.setbounds(x, y, 100, 100); public void keyreleased(keyeve

22、nt e) if (e.getkeycode() = keyevent.vk_up | e.getkeycode() = keyevent.vk_down | e.getkeycode() = keyevent.vk_left | e.getkeycode() = keyevent.vk_right) label.seticon(oneicon); public void keytyped(keyevent e) public static void main(string args) moveimage m = new moveimage(); 运行结果贴图:移动前移动中移动后移动末尾6 绘

23、制如下形式的一个二叉树。程序代码：package tree; import java.awt.color; import java.awt.font; import java.awt.graphics; import java.util.list; import javax.swing.jpanel; suppresswarnings("serial")public class treepanel extends jpanel private node tree; /保存整棵树 private int nodewidth = 20; /每个结点的宽度 private int

24、 nodeheight = 20; /每个结点的高度 private int vdistance = 50; /每2个结点的垂直距离 private int hdistance = 30; /每2个结点的水平距离 private int starty = 200; /根结点的y，默认距离顶部200像素 private int startx = 0; /根结点的x，默认水平居中对齐 private int childalignways; /子对齐方式 public static int child_align_absolute = 0; /相对panel居中 public static int

25、child_align_relative = 1; /相对父结点居中 private font font = new font("微软雅黑",font.bold,20); /描述结点的字体 private color nodecolor = color.white; /结点背景颜色 private color linklinecolor = color.black; /结点连线颜色 private color stringcolor = color.black; /结点描述文字的颜色 / 默认构造 public treepanel() this(null,child_ali

26、gn_absolute); /根据传入的node绘制树，以绝对居中的方式绘制 / param n 要绘制的树 public treepanel(node n) this(n,child_align_absolute); /* 1 设置要绘制时候的对齐策略 2 param childalignways 对齐策略 3 see tree.treepanel#child_align_relative 4 see tree.treepanel#child_align_absolute */ public treepanel(int childalignways) this(null,childalign

27、ways); /* 1根据子对齐策略childalignways绘制的树的根结点n 2 param n 要绘制的树的根结点 3 param childalignways 对齐策略 */ public treepanel(node n, int childalignways) super(); /settree(n); this.childalignways = childalignways; /* 1 设置用于绘制的树 2 param n 用于绘制的树的 */ public void settree(node n) tree = n; /重写，调用自己的绘制方法 public void pai

28、ntcomponent(graphics g) startx = (getwidth()-nodewidth)/2; super.paintcomponent(g); g.setfont(font); drawallnode(tree, startx, g); /* 1 递归绘制整棵树 2 param n 被绘制的node 3 param xpos 根节点的绘制x位置 4 param g 绘图上下文环境 */ public string tostring() return "a" public void drawallnode(node n, int x, graphics

29、 g) int y = n.getlayer()*(vdistance+nodeheight)+starty; int fonty = y + nodeheight - 4; g.setcolor(nodecolor); g.fillrect(x, y, nodewidth, nodeheight); /画结点的格子 g.setcolor(stringcolor); g.drawstring(n.getname(), x, fonty); /画结点的名字 if(n.haschild() list<node> c = n.getchilds(); int size = n.getch

30、ilds().size(); int tempposx = childalignways = child_align_relative ? x+nodewidth/2 - (size*(nodewidth+hdistance)-hdistance)/2 : (getwidth() - size*(nodewidth+hdistance)+hdistance)/2; int i = 0; for(node node : c) int newx = tempposx+(nodewidth+hdistance)*i; /孩子结点起始x g.setcolor(linklinecolor); g.dra

31、wline(x+nodewidth/2, y+nodeheight, newx+nodewidth/2, y+nodeheight+vdistance); /画连接结点的线 drawallnode(node, newx, g); i+; public color getnodecolor() return nodecolor; /* 1 设置结点背景颜色 2 param nodecolor 结点背景颜色 */ public void setnodecolor(color nodecolor) this.nodecolor = nodecolor; public color getlinklin

32、ecolor() return linklinecolor; /* * 设置结点连接线的颜色 * param nodelinkline 结点连接线的颜色 */ public void setlinklinecolor(color nodelinkline) this.linklinecolor = nodelinkline; public color getstringcolor() return stringcolor; /* * 设置结点描述的颜色 * param stringcolor 结点描述的颜色 */ public void setstringcolor(color stringc

33、olor) this.stringcolor = stringcolor; public int getstarty() return starty; /* * 设置根结点的y位置 * param starty 根结点的y位置 */ public void setstarty(int starty) this.starty = starty; public int getstartx() return startx; /* * 设置根结点的x位置 * param startx 根结点的x位置 */ public void setstartx(int startx) this.startx = startx; package tree.demo; import java.awt.borderlayout; import java.awt.gridlayout; import javax.swing.jframe; import javax.swing.jpanel; import tree.node; import tree.treepanel; public class testdrawtree extends jframe publi