Java array add element

Java add element to existing array

//original array
String[] rgb = new String[] {"red", "green"};
//new array with one more length
String[] rgb2 = new String[rgb.length + 1];
//copy the old in the new array
System.arraycopy(rgb, 0, rgb2, 0, rgb.length);
//add element to new array
rgb2[rgb.length] = "blue";
//optional: set old array to new array
rgb = rgb2;

Java array add element

// A better solution would be to use an ArrayList which can grow as you need it. 
// The method ArrayList.toArray( T[] a ) 
// gives you back your array if you need it in this form.

List<String> where = new ArrayList<String>();
where.add(element);
where.add(element);

// If you need to convert it to a simple array...

String[] simpleArray = new String[ where.size() ];
where.toArray( simpleArray );

Source: stackoverflow.com

Similar codes

0 vote296 views1 answer
New keyword in java
Java
2 votes282 views2 answers
What is spring boot
Java
0 vote287 views1 answer
Java calendar add minutes
Java
2 votes292 views1 answer
Android studio textbox change text
Java
0 vote303 views1 answer
Sleep for milliseconds in java
Java
1 vote290 views1 answer
How to add a keylistener to a jframe
Java
25 votes279 views3 answers
Check last character of a string java
Java
4 votes279 views2 answers
Dfhgodjfgiojdfiojgjkdhjbsdv JKNJZXcnmvmcvbpdfh
Java
4 votes333 views2 answers
Close scanner java
Java
0 vote239 views0 answer
Java