软件工程作业02

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("0");
    JTextField t2=new JTextField();
    JTextField t3=new JTextField();
    JTextField t4=new JTextField();
    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(j2.isSelected())
            {
                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();
    }

}



}
            else
            {
                if(e[i]==1)
                {
                    a[i]=r1[i].nextInt(c3-c2)+c2;
                    b[i]=r2[i].nextInt(c3-c2)+c2;
                    d[i]=a[i]+b[i];
                    a1[i]=String.valueOf(a[i]);
                    b1[i]=String.valueOf(b[i]);
                    d1[i]=String.valueOf(d[i]);
                    j1[i]=new JLabel(a1[i]);
                    j2[i]=new JLabel("+");
                    j3[i]=new JLabel(b1[i]);
                    j4[i]=new JLabel("=");
                    
                }
                if(e[i]==2)
                {
                    int x;
                    a[i]=r1[i].nextInt(c3-c2)+c2;
                    b[i]=r2[i].nextInt(c3-c2)+c2;
                    if(b[i]>a[i])
                    {
                        x=b[i];
                        b[i]=a[i];
                        a[i]=x;
                        
                    }
                    d[i]=a[i]-b[i];
                    a1[i]=String.valueOf(a[i]);
                    b1[i]=String.valueOf(b[i]);
                    d1[i]=String.valueOf(d[i]);
                    j1[i]=new JLabel(a1[i]);
                    j2[i]=new JLabel("-");
                    j3[i]=new JLabel(b1[i]);
                    j4[i]=new JLabel("=");
                    
                }
            }
            
            if(e[i]==3)
            {
                a[i]=r1[i].nextInt(c3-c2)+c2;
                b[i]=r2[i].nextInt(c3-c2)+c2;
                d[i]=a[i]*b[i];
                a1[i]=String.valueOf(a[i]);
                b1[i]=String.valueOf(b[i]);
                d1[i]=String.valueOf(d[i]);
                j1[i]=new JLabel(a1[i]);
                j2[i]=new JLabel("X");
                j3[i]=new JLabel(b1[i]);
                j4[i]=new JLabel("=");
                
            }
            if(f4==false)
            {
            if(e[i]==4)
            {
                d[i]=r1[i].nextInt(c3-c2)+c2;
                b[i]=r2[i].nextInt(c3-c2)+c2;
                a[i]=b[i]*d[i];
                while(d[i]==0||b[i]==0)
                {
                    r1[i]=new Random();
                    r2[i]=new Random();
                    d[i]=r1[i].nextInt(20);
                    b[i]=r2[i].nextInt(20);
                    a[i]=b[i]*d[i];
                }
                
                a1[i]=String.valueOf(a[i]);
                b1[i]=String.valueOf(b[i]);
                d1[i]=String.valueOf(d[i]);
                j1[i]=new JLabel(a1[i]);
                j2[i]=new JLabel("/");
                j3[i]=new JLabel(b1[i]);
                j4[i]=new JLabel("=");
                
                
            }
            }
            else 
            {
                if(e[i]==4)
                {
                    j7[i]=new JLabel("余");
                    a[i]=r1[i].nextInt(c3-c2)+c2;
                    b[i]=r2[i].nextInt(c3-c2)+c2;
                    while(a[i]==0||b[i]==0)
                    {
                        r1[i]=new Random();
                        r2[i]=new Random();
                        d[i]=r1[i].nextInt(20);
                        b[i]=r2[i].nextInt(20);
                        a[i]=b[i]*d[i];
                    }
                    
                    a1[i]=String.valueOf(a[i]);
                    b1[i]=String.valueOf(b[i]);
                    d1[i]=String.valueOf(d[i]);
                    j1[i]=new JLabel(a1[i]);
                    j2[i]=new JLabel("/");
                    j3[i]=new JLabel(b1[i]);
                    j4[i]=new JLabel("=");
                    
                    
                }
            }
            if(e[i]==4&&f4==true)
            {
            j1[i].setBounds(50+j*42, 50+(k/2)*32, 40, 30);
            j++;
            j2[i].setBounds(50+j*42, 50+(k/2)*32, 40, 30);
            j++;
            j3[i].setBounds(50+j*42, 50+(k/2)*32, 40, 30);
            j++;
            j4[i].setBounds(50+j*42, 50+(k/2)*32, 40, 30);
            j++;
            j5[i].setBounds(50+j*42, 50+(k/2)*32, 40, 30);
            j++;
            j7[i].setBounds(65+j*42,50+(k/2)*32, 40, 30);
            j++;
            j6[i].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[i]);
            c.add(j2[i]);
            c.add(j3[i]);
            c.add(j4[i]);
            c.add(j5[i]);
            c.add(j6[i]);
            c.add(j7[i]);
            }
            else
            {
                j1[i].setBounds(50+j*42, 50+(k/2)*32, 40, 30);
                j++;
                j2[i].setBounds(50+j*42, 50+(k/2)*32, 40, 30);
                j++;
                j3[i].setBounds(50+j*42, 50+(k/2)*32, 40, 30);
                j++;
                j4[i].setBounds(50+j*42, 50+(k/2)*32, 40, 30);
                j++;
                j5[i].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[i]);
                c.add(j2[i]);
                c.add(j3[i]);
                c.add(j4[i]);
                c.add(j5[i]);
            }
        }
        jf.setVisible(true);
        jf.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

}

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，frame窗口大小根据题目数目而定。
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。