Servlet介面概述

Eclipse外掛UML工具

Step1：把解壓縮的AmaterasUML內的jar檔複製

Step2：至eclipse/pulgins/ 把檔案貼到plugins的目錄底下

Step3：此工具使用方法打開eclipse右鍵點及專案New-->Other...                                    

Step4：AmaterasUML-->Class Diagram-->Next-->Finish

Step5：把寫好的java程式選取拉進UML工具，工具自動會幫您產生關係圖表

Finish

Collection

宣告三個三維陣列，用foreach迴圈印出

宣告三個三維陣列，用foreach迴圈印出
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public class Array {
 public Array() {
 }
 public void showArrays(int[][][]... a) {//這行事實上是用一個四維陣列去接外面的三維陣列
  for (int[][][] b : a)
   for (int[][] c : b)
    for (int[] d : c)
     for (int e : d)
      System.out.println(e);
 }
 /** 宣告三個三維陣列，用foreach迴圈印出
  * @CHEN-YU-YU(2013/01/23)
  */
 public static void main(String[] args) {
  int[][][] a = { { { 1, 2, 3 }, { 4, 5, 6 } },
    { { 7, 8, 9 }, { 10, 11, 12 } },
    { { 13, 14, 15 }, { 16, 17, 18 } } };
  int[][][] b = { { { 19, 20, 21 }, { 22, 23, 24 } },
    { { 25, 26, 27 }, { 28, 29, 30 } },
    { { 31, 32, 33 }, { 34, 35, 36 } } };
  int[][][] c = { { { 37, 38, 39 }, { 40, 41, 42 } },
    { { 43, 44, 45 }, { 46, 47, 48 } },
    { { 49, 50, 51 }, { 52, 53, 54 } } };
  Array array = new Array();
  array.showArrays(a, b, c);
 
 }
}
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Java-驗證身分證的Method

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public class IDCheck {
 private int convert(char ch){
  ch =Character.toUpperCase(ch);
  switch(ch){
      case 'A': return 10;
      case 'B': return 11;
      case 'C': return 12;
      case 'D': return 13;
      case 'E': return 14;
      case 'F': return 15;
      case 'G': return 16;
      case 'H': return 17;
      case 'I': return 34;
      case 'J': return 18;
      case 'K': return 19;
      case 'L': return 20;
      case 'M': return 21;
      case 'N': return 22;
      case 'O': return 35;
      case 'P': return 23;
      case 'Q': return 24;
      case 'R': return 25;
      case 'S': return 26;
      case 'T': return 27;
      case 'U': return 28;
      case 'V': return 29;
      case 'W': return 32;
      case 'X': return 30;
      case 'Y': return 31;
      case 'Z': return 32;
  }
  return -100;
 }
 private boolean checkFormat(String id){
  if(id.length() !=10){
   System.out.println("長度不符合");
   return false;
  }
  for(int i=1; i<10; i++){
   char ch = id.charAt(i);
   if(!Character.isDigit(ch)){
    System.out.println("格式錯誤");
    return false;
   }
  }
  return true;
 }
 public boolean check(String id){
  if(!checkFormat(id)){
   return false;
  }
  char ch = id.charAt(0);
    int D0 = this.convert(ch);
 
   int D1 = Integer.parseInt(id.substring(1, 2));
   int D2 = Integer.parseInt(id.substring(2, 3));
   int D3 = Integer.parseInt(id.substring(3, 4));
   int D4 = Integer.parseInt(id.substring(4, 5));
   int D5 = Integer.parseInt(id.substring(5, 6));
   int D6 = Integer.parseInt(id.substring(6, 7));
   int D7 = Integer.parseInt(id.substring(7, 8));
   int D8 = Integer.parseInt(id.substring(8, 9));
   int D9 = Integer.parseInt(id.substring(9, 10));
   int X1 = D0/10;
   int X2 = D0%10;
   int Y = X1+ 9*X2+ 8*D1+ 7*D2+ 6*D3+ 5*D4+4*D5+ 3*D6+ 2*D7+ D8;
   int CheckCode = (10-(Y % 10)) % 10;
 
   if(CheckCode==D9) {
    return true;
   } else {
     return false;
   }
 }
}
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