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

2 votes177 views2 answers
Java list files in directory
Java
0 vote287 views1 answer
Google intent for directions
Java
1 vote210 views1 answer
Java boolean null
Java
0 vote189 views1 answer
Managa firebase users
Java
1 vote222 views1 answer
String into ascii in java
Java
1 vote186 views1 answer
Setting up javafx in eclipse vm argument
Java
16 votes225 views4 answers
Reverse array in java
Java
0 vote177 views1 answer
Java private method can't call public method
Java
0 vote167 views1 answer
How to get the length of a jagged array java
Java
0 vote184 views1 answer
Java return tuple
Java