Declare an array variable///calculate sum of all elements/print all elements sum/output/foreach loop/array as parameter of function/Call PrintArray method to print

Instance

Here are the code examples for both of these syntaxes:

Double[] myList;          //preferred method  or  double myList[];  //effect is the same, but not the preferred method

Create an array

The Java language uses the new operator to create an array with the following syntax:

=New dataType[arraySize];    

The above syntax statement does two things:

• First, an array was created using datatype[arraysize].
• Assign the reference of the newly created array to the variable Arrayrefvar.

The declaration of an array variable, and the creation of an array can be done with a single statement, as follows:

DataType[]=new dataType[arraySize];      

 //calculates the sum of all elements  double= 0;for  (int I = 0; I < Size; I++)  { Total += myList [i]; or 
              

 Print all array elements      For  (int I =  0; I <  Mylist.; I++)  { system.. Println (mylist[i]< Span class= "PLN" > +  ");                /span>                

< Span class= "PLN" >< Span class= "KWD" >< Span class= "PLN" >< Span class= "pun" >< Span class= "pun" >< Span class= "pun" >               

  System.  Out.  println("Sum of:"+ total);        

Public Class Testarray { Public Static voidMain(String[]Args) { Double[]MyList= {1.9, 2.9, 3.4 3.5};//prints all array elements  for  (double Element: Mylist  { system.. Printlnelement} }}    /span>                 

Arrays as arguments to functions

An array can be passed as a parameter to a method. For example, the following example is a method for printing elements in an int array.

Public Static voidPrintArray(Int[]Array) { For (int I = 0  I < Array.; I++)  { system.. (array[i] +  "); }}          /span>                

The following example calls the PrintArray method to print out 3,1,2,6,4 and 2:

PrintArray(newint[]{3,1,2,6,4,2});  

Declare an array variable///calculate sum of all elements/print all elements sum/output/foreach loop/array as parameter of function/Call PrintArray method to print