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

1 vote115 views1 answer
How to create new frame with java swing
Java
1 vote59 views1 answer
Import androidx.core.util.ArraySet; ^ symbol: class ArraySet location: package androidx.core.util
Java
0 vote95 views1 answer
Was ist ein String in java
Java
34 votes98 views6 answers
Top wishlisted games on steam
Java
0 vote153 views1 answer
Jaccard index two vectors R
Java
-1 vote108 views1 answer
192.168.223.12:8080
Java
1 vote93 views1 answer
Processing string to int
Java
1 vote218 views1 answer
Android studio timers
Java
0 vote117 views1 answer
Test excel file java multipart
Java
11 votes117 views3 answers
Ubuntu change java version
Java