How do I fill arrays in Java

Question

I know how to do it normally  but I could swear that you could fill out out like a 0     0 0 0 0   How do you do it that way  I did try Google  but I didn t get anything helpful

User · Answer

An array can be initialized by using the new Object {} syntax.

For example, an array of String can be declared by either:

String[] s = new String[] {"One", "Two", "Three"};
String[] s2 = {"One", "Two", "Three"};

Primitives can also be similarly initialized either by:

int[] i = new int[] {1, 2, 3};
int[] i2 = {1, 2, 3};

Or an array of some Object:

Point[] p = new Point[] {new Point(1, 1), new Point(2, 2)};

All the details about arrays in Java is written out in Chapter 10: Arrays in The Java Language Specifications, Third Edition.

User · Answer

You can also do it as part of the declaration   int   a   new int    0  0  0  0

User · Answer

Arrays fill    The method is overloaded for different data types  and there is even a variation that fills only a specified range of indices

User · Answer

Arrays fill arrayName value     in java  int arrnum     5 6 9 2 10   for int i 0 i lt arrnum length i       System out println arrnum i          Arrays fill arrnum 0   for int i 0 i lt arrnum length i       System out println arrnum i            Output  5 6 9 2 10 0 0 0 0 0

User · Answer

In Java-8 you can use IntStream to produce a stream of numbers that you want to repeat  and then convert it to array  This approach produces an expression suitable for use in an initializer   int   data   IntStream generate    - gt  value  limit size  toArray      Above  size and value are expressions that produce the number of items that you want tot repeat and the value being repeated   Demo

User · Answer

Check out the Arrays fill methods   int   array   new int 4   Arrays fill array  0

User · Answer

Array elements in Java are initialized to default values when created  For numbers this means they are initialized to 0  for references they are null and for booleans they are false   To fill the array with something else you can use  Arrays fill   or as part of the declaration  int   a   new int    0  0  0  0     There are no shortcuts in Java to fill arrays with arithmetic series as in some scripting languages

User · Answer

int   a    1  2  3  4  5  6  7  8  9  10

[java] How do I fill arrays in Java?

Examples related to java

Examples related to arrays