Wu Yuxiong - natural born JAVA development of learning: StringBuffer, array

public class Test{
  public static void main(String args[]){
    StringBuffer sBuffer = new StringBuffer("菜鸟教程官网：");
    sBuffer.append("www");
    sBuffer.append(".runoob");
    sBuffer.append(".com");
    System.out.println(sBuffer);  
  }
}

public  class TestArray {
    public  static  void main (String [] args) {
       // array size 
      int size = 10 ;
       // definition array 
      Double [] myList = new new  Double [size]; 
      myList [ 0] = 5.6 ; 
      myList [ . 1] 4.5 of 5 = ; 
      myList [ 2] = 3.3 ; 
      myList [ . 3] = 13.2 ; 
      myList [ . 4] = 4.0 ; 
      myList [ . 5] = 34.33 ; 
      myList [ . 6] = 34.0 ; 
      myList [. 7] = 45.45 ; 
      myList [ . 8] = 99.993 ; 
      myList [ . 9] = 11123 ;
       // calculate all elements in the sum 
      Double Total = 0 ;
       for ( int I = 0; I <size; I ++ ) { 
         Total + = myList [ I]; 
      } 
      System.out.println ( "sum:" + Total); 
   } 
}

public  class TestArray {
    public  static  void main (String [] args) {
       Double [] myList = {1.9, 2.9, 3.4, 3.5 of }; 
 
      // print all the array elements 
      for ( int I = 0; I <myList.length; I ++ ) { 
         System.out.println (myList [I] + "" ); 
      } 
      // calculating the sum of all the elements 
      Double Total = 0 ;
       for ( int I = 0; I <myList.length; I ++ ) { 
         Total + = myList [I]; 
      } 
      System.out.println ( "IS the Total" + total);
      // 查找最大元素
      double max = myList[0];
      for (int i = 1; i < myList.length; i++) {
         if (myList[i] > max) max = myList[i];
      }
      System.out.println("Max is " + max);
   }
}

public  class TestArray {
    public  static  void main (String [] args) {
       Double [] myList = {1.9, 2.9, 3.4, 3.5 of }; 
 
      // print all the array elements 
      for ( Double Element: myList) { 
         System.out.println ( Element); 
      } 
   } 
}

public static void printArray(int[] array) {
  for (int i = 0; i < array.length; i++) {
    System.out.print(array[i] + " ");
  }
}

public static int[] reverse(int[] list) {
  int[] result = new int[list.length];
 
  for (int i = 0, j = result.length - 1; i < list.length; i++, j--) {
    result[j] = list[i];
  }
  return result;
}

String s[][] = new String[2][];
s[0] = new String[2];
s[1] = new String[3];
s[0][0] = new String("Good");
s[0][1] = new String("Luck");
s[1][0] = new String("to");
s[1][1] = new String("you");
s[1][2] = new String("!");