java實現簡單年齡計算器
阿新 • • 發佈:2020-05-18
本文例項為大家分享了java實現簡單年齡計算器的具體程式碼,供大家參考,具體內容如下
製作一個如下圖年齡計算器
根據題目,我做了一個由Calendar類以及年月日各相減得到的年齡,當然正確的方法不止一個,以下為我的原始碼和結果截圖:
package com.Date; import java.awt.FlowLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.Calendar; import java.util.StringTokenizer; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JTextField; public class AgeCounts extends JFrame implements ActionListener { JTextField text1,text2; public static String str = ""; public static void main(String[] args) { new AgeCounts(); } public AgeCounts() { JFrame mywindow = new JFrame(); mywindow.setTitle("年齡計算1.0版"); mywindow.setSize(400,70); mywindow.setLocation(350,300); mywindow.setResizable(false); mywindow.setLayout(new FlowLayout()); JLabel lab = new JLabel("生日 :"); mywindow.add(lab); text1 = new JTextField("",10); text2 = new JTextField("",10); mywindow.add(text1); JButton btn = new JButton("計算"); mywindow.add(btn); btn.addActionListener(this); mywindow.add(text2); text2.setEditable(false); mywindow.setVisible(true); } public void actionPerformed(ActionEvent e) { boolean f = true; str = text1.getText(); StringTokenizer st = new StringTokenizer(str," "); int myYear,myMonth,myDay; try { myYear = Integer.parseInt(st.nextToken()); myMonth = Integer.parseInt(st.nextToken()); myDay = Integer.parseInt(st.nextToken()); if (myMonth > 12 || myMonth < 1) { f = false; text2.setText("日期錯誤"); } if (myDay > 31 || myDay < 1) { f = false; text2.setText("日期錯誤"); } if (myYear < 0) { f = false; text2.setText("日期錯誤"); } if (f) { getAge(myYear,myDay); } } catch (Exception e1) { text2.setText("日期格式錯誤"); } } // 年齡計算函式 public void getAge(int year,int month,int day) { boolean b = true; Calendar cal = Calendar.getInstance(); int yearNow = cal.get(Calendar.YEAR); int monthNow = cal.get(Calendar.MONTH) + 1; int dayNow = cal.get(Calendar.DAY_OF_MONTH); int years,months = 0,days = 0; if (dayNow < day) { dayNow = dayNow + 30; monthNow = monthNow - 1; } if (monthNow < month) { monthNow = monthNow + 12; yearNow = yearNow - 1; } if (yearNow < year) { b = false; text2.setText("你還沒有出生喲"); } if (b) { years = yearNow - year; months = monthNow - month; days = dayNow - day; String result = years + "歲零" + months + "個月" + days + "天"; text2.setText(result); } } }
結果截圖:
更多計算器功能實現,請點選專題: 計算器功能彙總 進行學習
關於Android計算器功能的實現,檢視專題:Android計算器 進行學習。
以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支援我們。