第4次测试作业代码+160+曾元鹏

 

类图情况：

 

界面及功能情况：

public class Client {

    public static void main(String[] args)throws Exception  {    
        new Menu();
    }

}

public class Menu {

    private JFrame frame = new JFrame("三角形计算程序");
    private JButton calculate = new JButton("OK");
    private JButton rest = new JButton("Cancel");
    
    private JLabel lab1 = new JLabel("请输入三角形的三条边:");
    private JLabel lab2 = new JLabel("a:");
    private JLabel lab3 = new JLabel("b:");
    private JLabel lab4 = new JLabel("c:");
    private JLabel lab5 = new JLabel("这个三角形是:");
    private JLabel lab6 = new JLabel("面积是:");
    private JLabel lab7 = new JLabel("周长是:");
    
    
    private JTextField texta = new JTextField();
    private JTextField textb = new JTextField();
    private JTextField textc = new JTextField();
    private JTextField texttrangle = new JTextField();
    private JTextField textarea = new JTextField();
    private JTextField textperimeter = new JTextField();
    
    public Menu()
    {
        texttrangle.setEnabled(false);
        textarea.setEnabled(false);
        textperimeter.setEnabled(false);
        
        Font fnt = new Font("Serief", Font.BOLD, 15);
        frame.setLayout(null);
        lab1.setFont(fnt);
        lab1.setBounds(20,20,200,50);
        
        lab2.setFont(fnt);
        lab2.setBounds(30,60,20,20);
        texta.setBounds(55, 60, 50, 25);
        
        lab3.setFont(fnt);
        lab3.setBounds(120,60,20,20);
        textb.setBounds(140, 60, 50, 25);
        
        lab4.setFont(fnt);
        lab4.setBounds(200,60,20,20);
        textc.setBounds(220, 60, 50, 25);
        
        calculate.setBounds(60, 100, 70, 30);
        rest.setBounds(150, 100,75, 30);
        
        lab5.setFont(fnt);
        lab5.setBounds(30,143,100,20);
        texttrangle.setBounds(145, 140, 120, 25);
        
        lab6.setFont(fnt);
        lab6.setBounds(30,175,60,20);
        textarea.setBounds(95, 175, 60, 25);
        
        lab7.setFont(fnt);
        lab7.setBounds(165,175,60,20);
        textperimeter.setBounds(220,175, 60, 25);
        
        
        frame.setSize(270, 280);
        frame.setLocation(300,200);
        
        
        calculate.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0)
            {
                if (arg0.getSource()==calculate) {
                    try {
                        int a = Integer.parseInt(texta.getText()) ;
                        int b = Integer.parseInt(textb.getText()) ;
                        int c = Integer.parseInt(textc.getText()) ;
                        
                        String result = Sort.triangle(a, b, c);
                        if(result.equals("不构成三角形") || result.equals("边的值不在范围内"))
                        {
                            texttrangle.setText(result);
                            textarea.setText("0");
                            textperimeter.setText("0");
                            JOptionPane.showMessageDialog(null, result);
                        }else{
                            float area = Area.triangleArea(a, b, c);            
                            int length = Perimeter.perimeter(a, b, c);
                            texttrangle.setText(result);
                            textarea.setText(String.format("%.2f", area));
                            textperimeter.setText(String.valueOf(length));
                        }
                    } catch (Exception e) {
                        JOptionPane.showMessageDialog(null, "输入有误，请重新输入");
                    }                                                                            
                }
                
                if (arg0.getSource()==rest) {
                    
                    texta.setText(" ");
                    textb.setText(" ");
                    textc.setText(" ");
                    textarea.setText(" ");
                    texttrangle.setText(" ");
                    textperimeter.setText(" ");
                    JOptionPane.showMessageDialog(null, "已重置");
                }
                
            }                                    
        });
        
        
        
        
        frame.add(lab1);
        frame.add(lab2);
        frame.add(texta);
        frame.add(lab3);
        frame.add(textb);
        frame.add(lab4);
        frame.add(textc);    
        frame.add(calculate);
        frame.add(rest);    
        frame.add(lab5);
        frame.add(texttrangle);    
        frame.add(lab6);
        frame.add(textarea);    
        frame.add(lab7);
        frame.add(textperimeter);    
        frame.setVisible(true);
        
    }
    
 }

public class Sort {
     static String t1="边的值不在范围内";
          static String t2="不构成三角形";
          static String t3="等边三角形";
          static String t4="等腰三角形";
         static String t5="直角三角形";
          static String t6="一般三角形";
          public static String triangle(int a,int b,int c){    
              if(a<1 || a>100 ||b<1 || b>100|| c<1|| c>100)
             {
                 return t1;
             }
             else if(a>=b+c ||b>=a+c||c>=a+b)
            {
                 return t2;
             }
            else if(a==b &&b==c &&c==a){
                 return t3;
             }
             else if(a==b ||b==c ||c==a){
                 return t4;
             }
            else if(a*a+b*b==c*c ||b*b+c*c==a*a ||c*c+a*a==b*b){
                 return t5;
             
             }
            else {
                 return t6;
             }
         }
}

public class Area {
    public static float triangleArea(int a,int b,int c)
    {
        float s = (a+b+c)/2;
        float result =(float) Math.sqrt(s*(s-a)*(s-b)*(s-c));        
        return result;    
    }
}

public class Perimeter {
    public static int perimeter(int a,int b,int c)
    {
        return a+b+c;
    }
}