Java add values to array

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;

How to add a number to an array in java

List<Integer> myList = new ArrayList<Integer>();
myList.add(5);
myList.add(7);

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

Java add values to array

// If you read array of unknown length, from console
// and you want to put numbers into array of fixed length
long[] array = Arrays.stream(scanner.nextLine().split(" "))
                .mapToLong(Long::parseLong)
                .toArray();

int[] array = Arrays.stream(scanner.nextLine().split(" "))
                .mapToInt(Integer::parseInt)
                .toArray();

Similar codes

1 vote165 views1 answer
Sorting hashmap by key in java 8
Java
0 vote139 views1 answer
Kingkaihockey
Java
1 vote155 views1 answer
Declaration and definition of array in java
Java
0 vote137 views1 answer
Java integer division tofloat
Java
0 vote117 views2 answers
Java sha256 hex digest
Java
0 vote134 views1 answer
Javafx action event enter key
Java
15 votes133 views2 answers
Char.at java
Java
1 vote92 views1 answer
Hide menu item android
Java
2 votes123 views3 answers
Thread in java
Java
0 vote121 views1 answer
Separateur JMenu swing java
Java