第4次作业类测试代码+105032014118+陈元可

类测试代码的具体要求如下：

　　设计三角形完整程序

     已经完成的方法是：  String triangle(int a,int b,int c) 

     现在要求继续增加新的功能：

     建立界面，至少包含以下元素，但不限于此：

 

完成面积的方法：float triangleArea(int a,int b,int c) ,完成周长的方法：int perimeter(int a,int b,int c)

一、类图

 

二、功能界面及代码

TriangleFrame界面代码：

package test01;

import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import java.awt.BorderLayout;
import javax.swing.JButton;
import javax.swing.JTextField;
import java.awt.Font;
import javax.swing.UIManager;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JLabel;

public class TriangleFrame {

    private JFrame frm;
    private JTextField textField_b;
    private JTextField textField_a;
    private JTextField textField_c;
    private JTextField textField_is;
    private JTextField textField_area;
    private JTextField textField_peri;


    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    TriangleFrame window = new TriangleFrame();
                    window.frm.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }


    public TriangleFrame() {
        initialize();
    }


    private void initialize() {

        frm = new JFrame();
        frm.setBackground(UIManager.getColor("Button.background"));
        frm.setFont(new Font("Dialog", Font.PLAIN, 12));
        frm.setForeground(UIManager.getColor("Button.background"));
        frm.setTitle("三角形计算程序");
        frm.setBounds(400, 300, 400, 250);
        frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        
        JPanel panel = new JPanel();
        panel.setBounds(0, 0, 400, 250);
        panel.setBackground(UIManager.getColor("Button.background"));
        frm.getContentPane().add(panel, BorderLayout.CENTER);
        
        JLabel label_title = new JLabel("请输入三角形的三条边：");
        label_title.setBackground(UIManager.getColor("Button.background"));
        label_title.setFont(new Font("宋体", Font.BOLD, 16));
        label_title.setBounds(20, 100, 200, 20);
        panel.add(label_title);
        
        JPanel panel_1 = new JPanel();
        panel.add(panel_1);
        
        JLabel lblA = new JLabel("a:");
        panel_1.add(lblA);
        lblA.setFont(new Font("宋体", Font.BOLD, 20));
        lblA.setSize(30, 30);
        
        textField_a = new JTextField();
        panel_1.add(textField_a);
        textField_a.setColumns(6);
        
        JLabel lblB = new JLabel(" b:");
        panel_1.add(lblB);
        lblB.setFont(new Font("宋体", Font.BOLD, 20));
        lblB.setSize(30, 30);
        
        textField_b = new JTextField();
        panel_1.add(textField_b);
        textField_b.setColumns(6);
        
        JLabel lblC = new JLabel(" c:");
        panel_1.add(lblC);
        lblC.setFont(new Font("宋体", Font.BOLD, 20));
        lblC.setSize(30, 30);
        
        textField_c = new JTextField();
        panel_1.add(textField_c);
        textField_c.setColumns(6);
        
        JPanel panel_btn = new JPanel();
        panel_btn.setSize(200, 80);
        panel.add(panel_btn);
        
        JButton btnOK = new JButton("OK");
        btnOK.setSize(50, 50);
        btnOK.setFont(new Font("宋体", Font.PLAIN, 20));
        panel_btn.add(btnOK);
        
        JButton btnCancle = new JButton("Cancel");
        btnOK.setSize(50, 50);
        btnCancle.setFont(new Font("宋体", Font.PLAIN, 20));
        panel_btn.add(btnCancle);
        btnCancle.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent arg0) {
                Object object = arg0.getSource();
                if(object == btnCancle){
                    textField_a.setText("");
                    textField_b.setText("");
                    textField_c.setText("");
                    textField_is.setText("");
                    textField_area.setText("");
                    textField_peri.setText("");
                }
            }
        });
        btnOK.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent arg0) {
                Object object = arg0.getSource();
                if(object == btnOK){
                    int i_a,i_b,i_c;
                    String a=textField_a.getText();
                    String b=textField_b.getText();
                    String c=textField_c.getText();
                    if(test01.isNumber(a) && test01.isNumber(b) && test01.isNumber(c))
                    {
                         i_a = Integer.parseInt(a);
                         i_b = Integer.parseInt(b);
                         i_c = Integer.parseInt(c);
                         if (!(test01.triangle(i_a, i_b, i_c)).equals("边的值不在范围内")&&!(test01.triangle(i_a, i_b, i_c)).equals("不构成三角形")) {
                             String result=test01.triangle(i_a, i_b, i_c);
                             textField_is.setText(result);
                             String area=String.valueOf(test01.triangleArea(i_a, i_b, i_c));
                             textField_area.setText(area);
                             String peri=String.valueOf(test01.perimeter(i_a, i_b, i_c));
                             textField_peri.setText(peri);
                         }
                         else{
                             String result=test01.triangle(i_a, i_b, i_c);
                             textField_is.setText(result);
                             textField_area.setText("");
                             textField_peri.setText("");
                             textField_peri.setText("");
                         }
                    }
                    else{
                        JOptionPane.showMessageDialog(null, "输入有误，请重请输入正确整数");
                        new JFrame();
                        textField_a.setText("");
                        textField_b.setText("");
                        textField_c.setText("");
                        textField_is.setText("");
                        textField_area.setText("");
                        textField_peri.setText("");
                    }
                }
            }
        });
        
        JPanel panel_result1 = new JPanel();
        panel_result1.setBounds(0, 0, 400, 50);
        panel.add(panel_result1);
        
        JLabel j_is = new JLabel();
        panel_result1.add(j_is,BorderLayout.SOUTH);
        j_is.setFont(new Font("宋体", Font.PLAIN, 15));
        j_is.setBackground(UIManager.getColor("Button.background"));
        j_is.setText("这个三角形是：");
        
        textField_is = new JTextField();
        textField_is.setFont(new Font("宋体", Font.PLAIN, 15));
        panel_result1.add(textField_is);
        textField_is.setEditable(false);
        textField_is.setColumns(15);
        
        JPanel panel_result2 = new JPanel();
        panel.add(panel_result2);
        
        JLabel j_area = new JLabel();
        panel_result2.add(j_area);
        j_area.setFont(new Font("宋体", Font.PLAIN, 15));
        j_area.setBackground(UIManager.getColor("Button.background"));
        j_area.setText("面积是：");
        
        textField_area = new JTextField();
        textField_area.setFont(new Font("宋体", Font.PLAIN, 15));
        textField_area.setEditable(false);
        panel_result2.add(textField_area);
        textField_area.setColumns(10);
        
        JLabel j_peri = new JLabel();
        panel_result2.add(j_peri);
        j_peri.setFont(new Font("宋体", Font.PLAIN, 15));
        j_peri.setBackground(UIManager.getColor("Button.background"));
        j_peri.setText("周长是：");
        
        textField_peri = new JTextField();
        textField_peri.setFont(new Font("宋体", Font.PLAIN, 15));
        textField_peri.setEditable(false);
        panel_result2.add(textField_peri);
        textField_peri.setColumns(10);
        
    }
}

test01类代码：

package test01;

public class test01 {

    //判断是否是整数
    public static boolean isNumber(String s)
    {
        if(s==null)
        {
            return false;
        }
        for(int i = 0; i < s.length(); i++)
        {
            if(Character.isDigit(s.charAt(i)) == false)
            {
                return false;
            }           
        }
        return true;
    }
    
    //判断三角形
    public static String triangle(int a, int b, int c)
    {
        String result; 
        
        if(a<1 || a>100 || b<1 || b>100 || c<1 || c>100)
        {
            result = "边的值不在范围内！";        
        }
        if((a<b+c)&&( b<a+c)&&( c<a+b)){
            if((a==b)||(a==c)||(b==c)){
                if((a==b)&&(b==c)) 
                    result="等边三角形";
                else
                    result="等腰三角形";
            }
            else if((a*a+b*b==c*c)||(a*a+c*c==b*b)||(b*b+c*c==a*a))
                result="直角三角形";
            else 
                result="一般三角形";
        }
        else{
            result="不能构成三角形";
    }
        return result;

    }

    //返回三角形的周长
    public static int perimeter(int a,int b,int c){
        return a+b+c;
    }
    
    //返回三角形的面积
    public static float triangleArea(int a,int b,int c){
        float s = (float) (0.5*perimeter( a, b, c));
        return (float) Math.sqrt((s*(s-a)*(s-b)*(s-c)));
    }
}

 

三、实验结果