Java Learning notes: arrays

package myjava;/** *  Arrays  *  @author  Administrator * */import  java.util.*;p Ublic class myarray {public static void main (String args[])  {//  Array Sorting int array[] = { 1, 9, 4, 2, 8, 6, 7  }; Arrays.sort (array);//  array output for  (Int item : array)  {system.out.println (item);}   Array to string string str = arrays.tostring (array); System.out.println (str);//  gets the array length System.out.println ("Array length:"  + array.length);int[][]  newarray = new int[2][5]; System.out.println ("second-dimensional array length: "  + newarray[0].length);//  array inversion arraylist arraylist  = new arraylist (), Arraylist.add ("a"), Arraylist.add ("B"), Arraylist.add ("C"); Collections.reverse (arrayList); System.out.println ("reverse sort: "  + arraylist);//  array Maximum minimum value integer[] numners = {  8, 3, 6, 1, 4, 7 };int min =  (int)  collections.min (Arrays.asList (numners)); int  max =  (int)  collections.max (arrays.aslist (numners)); SYSTEM.OUT.PRINTLN ("Minimum value is: "  + min); SYSTEM.OUT.PRINTLN ("Maximum value is: "  + max);//  array merge string a[] = {  "a",  "B" ,  "C"  }; string b[] = {  "D",  "E"  }; List list = new arraylist (Arrays.aslist (a)); List.addall (Arrays.aslist (b)); Object[] c  = list.toarray (); SYSTEM.OUT.PRINTLN ("Array C is:"  + arrays.tostring (c));//  array padding int array2[] = new  INT[6]; Arrays.fill (array2, 100); System.out.println ("populated array:"  + arrays.tostring (array2));//  Array expansion string[] names =  new String[] {  "A",  "B",  "C"  }; string[] extended = new string[5];extended[3] =  "D";extended[4] =  "E"; System.arraycopy (NAMes, 0, extended, 0, names.length);for  (string row : extended)  { System.out.println (row);}   Delete array element arraylist arraylist2 = new arraylist (); Arraylist2.clear (); Arraylist2.add (0,   " 0  elements"), Arraylist2.add (1,  " 1  elements"), Arraylist2.add (2,  "the first  2  Elements "); Arraylist2.remove (1); System.out.println ("After array delete element:" +arraylist2);}}

Java Learning notes: arrays