软件工程作业03

源代码：

package zuoye2;

import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;

class jiemian
{
	public jiemian()
	{
	JFrame  jf=new JFrame("四则运算");
	jf.setBounds(200, 100, 500, 500);
	jf.setLayout(null);
	Container c=jf.getContentPane();
	JCheckBox j1=new JCheckBox("有乘除法");
	JCheckBox j2=new JCheckBox("有括号");
	JCheckBox j3=new JCheckBox("有负数");
	JCheckBox j4=new JCheckBox("有余数");
	JLabel l1=new JLabel("请输入数值范围");
	JLabel l4=new JLabel("请输入参数个数（1—10）");
	JLabel l2=new JLabel("—");
	JLabel l3=new JLabel("请输入题目数目(1-30)");
	JTextField t1=new JTextField("2");
	JTextField t2=new JTextField("20");
	JTextField t3=new JTextField("30");
	JTextField t4=new JTextField("30");
	j1.setBounds(100, 100, 80,20);
	j2.setBounds(100, 130, 80,20);
	l4.setBounds(100, 160, 180,20);
	j3.setBounds(100, 220, 80,20);
	j4.setBounds(100, 250, 80,20);
	t1.setBounds(100, 190, 50,20);
	l1.setBounds(100, 280, 150,20);
	t2.setBounds(100, 310, 50,20);
	t3.setBounds(180, 310, 50,20);
	l2.setBounds(160, 310, 30,20);
	l3.setBounds(100, 340, 150,20);
	t4.setBounds(100, 370, 50,20);
	c.add(j1);
	c.add(j2);
	c.add(j3);
	c.add(l4);
	c.add(j4);
	c.add(t1);
	c.add(l1);
	c.add(t2);
	c.add(t3);
	c.add(l2);
	c.add(l3);
	c.add(t4);
	JButton b1=new JButton("确定");
	JButton b2=new JButton("退出");
	b1.setBounds(350, 150,70, 50);
	b2.setBounds(350, 300,70, 50);
	c.add(b1);
	c.add(b2);
	b1.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) 
        {
        	jf.dispose();
        	String a1,a2,a3,a4,a5;
        	int c1,c2,c3,c4,c5;
        	boolean f1=false,f2=false,f3=false,f4=false,f5=false;
        	a1=t1.getText().toString();
        	a2=t2.getText().toString();
        	a3=t3.getText().toString();
        	a4=t4.getText().toString();
        	if(a2.equals("")||a3.equals(""))
        	{
        		JOptionPane.showMessageDialog(null, "范围不能为空", "范围不能为空", JOptionPane.ERROR_MESSAGE); 
        		System.exit(0);
        	}
        	else if(a4.equals(""))
        	{
        		JOptionPane.showMessageDialog(null, "数目不能为空", "数目不能为空", JOptionPane.ERROR_MESSAGE); 
        		System.exit(0);
        	}
        	else if (a1.equals(""))
        	{
        		JOptionPane.showMessageDialog(null, "参数个数不能为空", "参数个数不能为空", JOptionPane.ERROR_MESSAGE);
        		System.exit(0);
        	}
        	else if(Integer.parseInt(a1)>10||Integer.parseInt(a1)<=0)
        	{
        		JOptionPane.showMessageDialog(null, "参数个数超出", "参数个数超出", JOptionPane.ERROR_MESSAGE);
        		System.exit(0);
        	}
        	else if(Integer.parseInt(a4)<=0||Integer.parseInt(a4)>30)
        	{
        		JOptionPane.showMessageDialog(null, "题目数目不正确", "题目数目不正确", JOptionPane.ERROR_MESSAGE);
        		System.exit(0);
        	}
        	else if(Integer.parseInt(a3)<=Integer.parseInt(a2))
        	{
        		JOptionPane.showMessageDialog(null, "范围不正确", "范围不正确", JOptionPane.ERROR_MESSAGE);
        		System.exit(0);
        	}
        	if(j1.isSelected())
        	{
        		f1=true;
        	}
        	if(j2.isSelected())
        	{
        		f2=true;
        	}
        	if(j3.isSelected())
        	{
        		f3=true;
        	}
        	if(j4.isSelected())
        	{
        		f4=true;
        	}
        	c1=Integer.parseInt(a1);
        	c2=Integer.parseInt(a2);
        	c3=Integer.parseInt(a3);
        	c4=Integer.parseInt(a4);
        	yunsuan a=new yunsuan(c1,c2,c3,c4,f1,f2,f3,f4);
        }

    });
	b2.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) 
        {
        	jf.dispose();
        }

    });
	jf.setVisible(true);
	jf.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
	}
}

package zuoye2;


public class m extends jiemian
{
	
	public static void main(String[] args) 
	{
		// TODO Auto-generated method stub
		jiemian a=new jiemian();
	}

}

package zuoye2;

import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Random;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.WindowConstants;

public class yunsuan implements Runnable
{
	JFrame jf=new JFrame("四则运算");
	Container c=jf.getContentPane();
	int i1,i2,i3,i4,anwser;
	boolean j1,j2,j3,j4;
	JTextField j5;
	Thread t;
	protected void ks()
	{
		t=new Thread(this);
	}
	public yunsuan(int c1, int c2, int c3, int c4, boolean f1, boolean f2, boolean f3, boolean f4)
	{
		i1=c1;
		i2=c2;
		i3=c3;
		i4=c4;
		j1=f1;
		j2=f2;
		j3=f3;
		j4=f4;
		JButton bu1=new JButton("提交");
		JButton bu2=new JButton("退出");
		bu1.setBounds(20, 100, 60, 20);
		bu2.setBounds(100, 100, 60, 20);
		c.add(bu1);
		c.add(bu2);
		ks();
		t.start();
		bu1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) 
            {
            	String qs;
            	qs=j5.getText().toString();
            	if(qs.equals(""))
            	{
            		JOptionPane.showMessageDialog(null, "答案为空", "答案为空", JOptionPane.ERROR_MESSAGE);
            	}
            	else if(anwser==Integer.parseInt(qs))
            	{
            		t.stop();
            		ks();
            		c.removeAll();
            		
            		bu1.setBounds(20, 100, 60, 20);
            		bu2.setBounds(100, 100, 60, 20);
            		c.add(bu1);
            		c.add(bu2);
            		t.start();
            		c.repaint();
            		jf.setVisible(true);
            	}            	
            	else
            	{
            		JOptionPane.showMessageDialog(null, "答案错误", "答案错误", JOptionPane.ERROR_MESSAGE);
            	}
            }

        });
		bu2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) 
            {
            	jf.dispose();
            }

        });
		jf.setBounds(250, 200, c1*150+100, 200);
		jf.setLayout(null);
		jf.setVisible(true);
		jf.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
	}
	@Override
	public void run() 
	{
		int c1,c2,c3,c4;
		boolean f1,f2,f3,f4;
		//Container c=jf.getContentPane();
		c1=i1;
		c2=i2;
		c3=i3;
		c4=i4;
		f1=j1;
		f2=j2;
		f3=j3;
		f4=j4;
		int a,b,d = 0,e;
		String a1,b1,d1;
		JLabel j1,j2,j3,j4,j7;
		j1=new JLabel();
		j2=new JLabel();
		j3=new JLabel();
		j4=new JLabel();
		j7=new JLabel();
		JTextField j6;
		j5=new JTextField();
		j6=new JTextField();
		Random r1[]=new Random[2];
		Random r2=new Random();
		int i,j=0,k=0,l;
			j5=new JTextField();
			j6=new JTextField();
			for(i=0;i<2;i++)
			{
				r1[i]=new Random();
			}
			j5=new JTextField();
			if(f1==true)
			{
			a=c3-c2;
			b=c3-c2;
			a=r1[0].nextInt(a);
			b=r1[1].nextInt(b);
			a=a+c2;
			b=b+c2;
			e=r2.nextInt(4);
			}
			else
			{
				a=c3-c2;
				b=c3-c2;
				a=r1[0].nextInt(a);
				b=r1[1].nextInt(b);
				a=a+c2;
				b=b+c2;
				e=r2.nextInt(2);
			}
			e=e+1;
			if(f3!=false)
			{
				if(e==1)
				{
					a=r1[0].nextInt(c3-c2)+c2;
					b=r1[1].nextInt(c3-c2)+c2;
					d=a+b;
					a1=String.valueOf(a);
					b1=String.valueOf(b);
					d1=String.valueOf(d);
					j1=new JLabel(a1);
					j2=new JLabel("+");
					j3=new JLabel(b1);
					j4=new JLabel("=");
				
				}
				if(e==2)
				{
				
					a=r1[0].nextInt(c3-c2)+c2;
					b=r1[1].nextInt(c3-c2)+c2;
					d=a-b;
					a1=String.valueOf(a);
					b1=String.valueOf(b);
					d1=String.valueOf(d);
					j1=new JLabel(a1);
					j2=new JLabel("-");
					j3=new JLabel(b1);
					j4=new JLabel("=");
				
				}
			}
			else
			{
				if(e==1)
				{
					a=r1[0].nextInt(c3-c2)+c2;
					b=r1[1].nextInt(c3-c2)+c2;
					d=a+b;
					a1=String.valueOf(a);
					b1=String.valueOf(b);
					d1=String.valueOf(d);
					j1=new JLabel(a1);
					j2=new JLabel("+");
					j3=new JLabel(b1);
					j4=new JLabel("=");
					
				}
				if(e==2)
				{
					int x;
					a=r1[0].nextInt(c3-c2)+c2;
					b=r1[1].nextInt(c3-c2)+c2;
					if(b>a)
					{
						x=b;
						b=a;
						a=x;
						
					}
					d=a-b;
					a1=String.valueOf(a);
					b1=String.valueOf(b);
					d1=String.valueOf(d);
					j1=new JLabel(a1);
					j2=new JLabel("-");
					j3=new JLabel(b1);
					j4=new JLabel("=");
					
				}
			}
			
			if(e==3)
			{
				a=r1[0].nextInt(c3-c2)+c2;
				b=r2.nextInt(c3-c2)+c2;
				d=a*b;
				a1=String.valueOf(a);
				b1=String.valueOf(b);
				d1=String.valueOf(d);
				j1=new JLabel(a1);
				j2=new JLabel("X");
				j3=new JLabel(b1);
				j4=new JLabel("=");
				
			}
			if(f4==false)
			{
			if(e==4)
			{
				d=r1[0].nextInt(c3-c2)+c2;
				b=r1[1].nextInt(c3-c2)+c2;
				a=b*d;
				while(d==0||b==0)
				{
					r1[0]=new Random();
					r1[1]=new Random();
					d=r1[0].nextInt(20);
					b=r1[1].nextInt(20);
					a=b*d;
				}
				
				a1=String.valueOf(a);
				b1=String.valueOf(b);
				d1=String.valueOf(d);
				j1=new JLabel(a1);
				j2=new JLabel("/");
				j3=new JLabel(b1);
				j4=new JLabel("=");
				
				
			}
			}
			else 
			{
				if(e==4)
				{
					j7=new JLabel("余");
					a=r1[0].nextInt(c3-c2)+c2;
					b=r1[1].nextInt(c3-c2)+c2;
					while(a==0||b==0)
					{
						r1[0]=new Random();
						r1[1]=new Random();
						d=r1[0].nextInt(20);
						b=r1[1].nextInt(20);
						a=b*d;
					}
					
					a1=String.valueOf(a);
					b1=String.valueOf(b);
					d1=String.valueOf(d);
					j1=new JLabel(a1);
					j2=new JLabel("/");
					j3=new JLabel(b1);
					j4=new JLabel("=");
					
					
				}
			}
			if(e==4&&f4==true)
			{
			j1.setBounds(50+j*42, 50+(k/2)*32, 40, 30);
			j++;
			j2.setBounds(50+j*42, 50+(k/2)*32, 40, 30);
			j++;
			j3.setBounds(50+j*42, 50+(k/2)*32, 40, 30);
			j++;
			j4.setBounds(50+j*42, 50+(k/2)*32, 40, 30);
			j++;
			j5.setBounds(50+j*42, 50+(k/2)*32, 40, 30);
			j++;
			j7.setBounds(65+j*42,50+(k/2)*32, 40, 30);
			j++;
			j6.setBounds(50+j*42,50+(k/2)*32, 40, 30);
			j++;
			j++;
			j++;
			k++;
			if(k!=0&&k%2==0)
			{
				j=0;
			}
			c.add(j1);
			c.add(j2);
			c.add(j3);
			c.add(j4);
			c.add(j5);
			c.add(j6);
			c.add(j7);
			}
			else
			{
				j1.setBounds(50+j*42, 50+(k/2)*32, 40, 30);
				j++;
				j2.setBounds(50+j*42, 50+(k/2)*32, 40, 30);
				j++;
				j3.setBounds(50+j*42, 50+(k/2)*32, 40, 30);
				j++;
				j4.setBounds(50+j*42, 50+(k/2)*32, 40, 30);
				j++;
				j5.setBounds(50+j*42, 50+(k/2)*32, 40, 30);
				j++;
				j++;
				j++;
				j++;
				j++;
				k++;
				if(k!=0&&k%2==0)
				{
					j=0;
				}
				c.add(j1);
				c.add(j2);
				c.add(j3);
				c.add(j4);
				c.add(j5);
				
			}
			anwser = d;
			c.repaint();
			jf.setVisible(true);
		}
		// TODO Auto-generated method stub
		
	}
设计思路：
1.建立一个frame面板，通过添加复选框来选择是否有乘除法，是否有余数，是否有括号以及是否有负数
2.通过添加文本框来控制计算范围和题目数目。
3.当点击确定按钮，当前窗口关闭，数据提交，并新建一个frame窗口。
4.通过random产生随机数来控制计算题目以及加减乘除（0-3分别代表加减乘除，若没有选择有乘除，则产生0或1，从而将乘除运算排除掉）
5.根据是否选择有余数来控制除法。若没有余数，则将生成的两个随机数之积作为被除数，第二个随机数作为除数。
6.若选择有负数，加减不做处理，否则比较减数与被减数大小。若减数大于被减数，则将二者交换。
7.通过建立JLabel数组来向窗口输出题目，题目坐标按照题目数累加
8.通过建立文本框来填入答案
9.括号和检验重复没做。
10.通过线程来控制题目更换
截图：