Question

JAVA点击“获取题目”按钮随机产生一个计算题,判断用户回答是否正确,给出用户得分和答题时间

计算题随机如1+2=，数字和符号都是随机产生，给用户答题，点击“交卷”按钮开始判断用户回答题目的数量和答对题目的数量，算出得分和答题时间，点击“清空”可以清空回答记录。要创建一个新窗口，在窗口中答题
建立一个窗口，布局为几个格子，有获取题目，交卷，清空这几个按钮，还有给用户回答的一个格子。如点击了5次“获取题目”则出现5道题，答对了4道则得80分，用时********秒。急需。。。。
有一部分代码参考：
中间不知道。。。
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt){
Random random=new Random();
n1=random.nextInt(20);
n2=random.nextInt(8)+1;
int n3=random.nextInt(4);
String ope=" ";
超过字数了。。
仅作参考。。。。。。我知道过程很长，求完整代码。。。。。。求大神指教

Answer 1

再1-10里面随机出来2个数赋值给a和b；再"+","-","*","/" 4个符号里面随机出来一个赋值给c；
显示部分就是：String str=a+"随机出来的符号"+b+"=";
计算部分就是：
int sum=0;
if(c=="+"){
sum=a+b;
}else if(c=="-"){
sum=a-b;
}else if(c=="*"){
sum=a*b;
}else if(c=="/"){
sum=a/b;
}else{};
然后把显示部分的值拿过来和sum的值比较相等就答对了；整体拿个for循环包起来，要多少到题循环多少次，再for循环最下面加上睡眠时间，在时间内没答对就循环到下一题，，给一个全局变量int count=0这个拿来保存答对的个数答对一个+10；思路就这样自己敲代码吧.至于清空的问题，吧count=0就好了，

追问

点击获取题目按钮怎么将题目显示在规定的格子里面，思路知道，代码不会写

追答

swing组件写的？点击按钮把那个生成的str字符串放在容器里面就好了，

追问

就是那个swing什么的，怎么弄，代码不会写，求个完整的

追答

额额，那等12点下班了我给你敲了吧代码贴上来；

追问

急用完整的代码，可以发上来了吗

追答

public class test extends JFrame {
/**
*
*/
private static final long serialVersionUID = 1L;
JPanel jp1;
JTextArea jtf1;
JTextArea jtf2;
JButton jb1;
JButton jb2;
JButton jb3;
public test() {
jp1=new JPanel();
jtf1=new JTextArea();
jtf1.setText("1231312321");
jtf1.setColumns(10);
jtf1.setRows(2);
jtf2=new JTextArea();
jtf2.setColumns(5);
jtf2.setRows(2);
jb1=new JButton();
jb1.setText("开始回答问题");
jb2=new JButton();
jb2.setText("提交答案");
jb3=new JButton();
jb3.setText("清空");

jp1.add(jb1);
jp1.add(jtf1);
jp1.add(jtf2);
jp1.add(jb2);
jp1.add(jb3);
this.add(jp1);
this.setTitle("请答题，时间为10秒");
this.setSize(400, 300);
this.setVisible(true);
this.setDefaultCloseOperation(this.EXIT_ON_CLOSE);
}

public static void main(String[] args) {
new test();

}

}
框框帮你画了，布局自己搞，早上写的java代码循环加进去就好了，监听事件用setAction不会再去百度上看看，

Answer 2

java">importjavax.swing.*;importjavax.swing.border.*;importjava.awt.*;importjava.awt.event.*;importjava.awt.geom.*;importjava.util.*;finalclassDotPaintDemoextendsJFrame{finalstaticprivateDimensionSIZE=newDimension(400,300);publicStringgetTitle(){return"DotPaintDemo";}publicDimensiongetPreferredSize(){returnSIZE;}publicDimensiongetMinimumSize(){returnSIZE;}publicDimensiongetMaximumSize(){returnSIZE;}publicDimensiongetSize(){returnSIZE;}privateCanvascanvas;privateJButtonbutton;privateBrushbrush;DotPaintDemo()throwsHeadlessException{init();attachListeners();doLay();setVisible(true);}privatevoidinit(){brush=newDotBrush();canvas=newCanvas(brush);button=newJButton("PaintDot");button.addChangeListener(evt->{Randomrandom=newRandom(System.nanoTime());brush.update(null,newPoint(random.nextInt(getWidth()-10),random.nextInt(getHeight()-10)));});}privatevoidattachListeners(){addWindowListener(newWindowAdapter(){publicvoidwindowClosing(WindowEvente){System.exit(1);}});}privatevoiddoLay(){Containercontainer=getContentPane();container.add(canvas,BorderLayout.CENTER);container.add(button,BorderLayout.NORTH);pack();}publicstaticvoidmain(Stringargs){System.setProperty("swing.defaultlaf","com.sun.java.swing.plaf.windows.WindowsLookAndFeel");SwingUtilities.invokeLater(DotPaintDemo::new);}/***画笔*/privateinterfaceBrushextendsObserver{/***dopaintaction*@paramgthegraphicscontextinyouapplication*/voidpaint(Graphicsg);/***Thecomponentthatthisbrushhold*@returncomponentinstance*/ComponentgetOwner();voidsetOwner(Componentowner);}privatestaticfinalclassDotBrushimplementsBrush{privateComponentowner;privateArc2Dshape=newArc2D.Float(Arc2D.Float.CHORD);publicComponentgetOwner(){returnowner;}publicvoidsetOwner(Componentowner){this.owner=owner;}publicvoidpaint(Graphicsg){Graphics2Dg2=(Graphics2D)g.create();g2.fill(newRectangle(0,0,getOwner().getWidth(),getOwner().getHeight()));g2.setColor(Color.PINK);g2.fill(shape);g2.dispose();}publicvoidupdate(Observableo,Objectarg){if(arginstanceofPoint){Pointp=(Point)arg;shape.setArcByCenter(p.x,p.y,13,0,360,Arc2D.Float.CHORD);}if(owner!=null)owner.repaint();}}/***画布*/privateclassCanvasextendsJComponent{privateBrushbrush;privateCanvas(Brushbrush){super();this.brush=brush;brush.setOwner(this);}protectedvoidpaintComponent(Graphicsg){super.paintComponent(g);if(brush==null)return;brush.paint(g);}}}

Answer 3

importjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjavax.swing.*;publicclasstestextendsJFrame{privateJButtonbutton1=null;privateJTextFieldedit1=null;privateStrings=null;publictest(){super("Frame");button1=newJButton("Ramdom");button1.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){s=String.valueOf(Math.round((Math.random()*1000)%200)+200);edit1.setText(s);}});this.getContentPane().add("South",button1);edit1=newJTextField("");this.getContentPane().add("North",edit1);this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);this.setSize(120,80);this.setVisible(true);}publicstaticvoidmain(String[]args){newtest();}}

Answer 4

别闹 别说 实现 就SWING 就够写 一阵子了

Answer 5

是十以内的算术题吗？？

追问

10以内，20以内都行，加减乘除随机

Answer 6

bs还是cs?