本文實例為大家分享了java實現簡單年齡計算器的具體代碼,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,以下為我的源代碼和結果截圖:
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 || myMonth31 || 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, myMonth, myDay); } } catch (Exception e1) { text2.setText("日期格式錯誤"); } } // 年齡計算函數 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,請點擊專題: 計算器功能彙總 進行學習
關於Android計算器功能的實現,查看專題:Android計算器 進行學習。
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