第四次作业类测试代码+108+曾宏宇
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1.类图
2.代码
常量定义:
private final static int HP_PRICE=80; private final static int SHELL_PRICE=10; private final static int PROTECTOR_PRICE=8;
方法:
commission(int headphone,int shell,int protector)
public static double commission(int headphone,int shell,int protector){ double result=headphone*HP_PRICE+shell*SHELL_PRICE+protector*PROTECTOR_PRICE; if(result<1000) { return result*0.1; //小于1000 } else if(result>=1000&&result<=1800) { return 1000*0.1+(result-1000)*0.15; //大于1000且小于1800 } else { return 1000*0.1+800*0.15+(result-1800)*0.2; //大于1800 } }
mostSale(int headphone,int shell,int protector)
public static String mostSale(int headphone,int shell,int protector){ String mostSale=""; int temp=0; if(headphone>shell){ temp=headphone; mostSale="耳机"; } else{ temp=shell; mostSale="手机壳"; } if(temp<protector){ temp=protector; mostSale="保护膜"; } return mostSale; }
diffSale(int headphone,int shell,int protector)
public static int diffSale(int headphone,int shell,int protector){ int sales[]={headphone,shell,protector}; Arrays.sort(sales); int diffSale=sales[sales.length-1]-sales[0]; return diffSale; }
图形化界面(事件处理)
“ok”点击事件:
btn_ok.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String hp=tf_hp.getText(); String shell=tf_shell.getText(); String protector=tf_protector.getText(); try { int num_hp=Integer.parseInt(hp); int num_shell=Integer.parseInt(shell); int num_protector=Integer.parseInt(protector); tf_com.setText(Tool.commission(num_hp, num_shell, num_protector)+""); tf_ms.setText(Tool.mostSale(num_hp, num_shell, num_protector)); tf_ds.setText(Tool.diffSale(num_hp, num_shell, num_protector)+""); } catch (Exception e2) { JOptionPane.showMessageDialog(null, "输入有误,请重新输入!"); tf_hp.setText(""); tf_shell.setText(""); tf_protector.setText(""); } } });
“cancel”点击事件
btn_cancel.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { tf_hp.setText(""); tf_shell.setText(""); tf_protector.setText(""); } });
3.运行界面
输入合法:
输入不合法
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