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Deklarasi Array
String[] aArray = new String[5]; String[] bArray = {"a","b","c", "d", "e"}; String[] cArray = new String[]{"a","b","c","d","e"};
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Output array ing Jawa
int[] intArray = { 1, 2, 3, 4, 5 }; String intArrayString = Arrays.toString(intArray); // print directly will print reference value System.out.println(intArray); // [I@7150bd4d System.out.println(intArrayString); // [1, 2, 3, 4, 5]
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Nggawe ArrayList saka Array
String[] stringArray = { "a", "b", "c", "d", "e" }; ArrayList<String> arrayList = new ArrayList<String>(Arrays.asList(stringArray)); System.out.println(arrayList); // [a, b, c, d, e]
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Priksa array kanggo nilai tartamtu
String[] stringArray = { "a", "b", "c", "d", "e" }; boolean b = Arrays.asList(stringArray).contains("a"); System.out.println(b); // true
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Nggabungake rong susunan
int[] intArray = { 1, 2, 3, 4, 5 }; int[] intArray2 = { 6, 7, 8, 9, 10 }; // Apache Commons Lang library int[] combinedIntArray = ArrayUtils.addAll(intArray, intArray2);
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Deklarasi array ing siji baris
method(new String[]{"a", "b", "c", "d", "e"});
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Gabungan Elemen Array dadi String
// containing the provided list of elements // Apache common lang String j = StringUtils.join(new String[] { "a", "b", "c" }, ", "); System.out.println(j); // a, b, c
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Ngonversi
ArrayList
menyang arrayString[] stringArray = { "a", "b", "c", "d", "e" }; ArrayList<String> arrayList = new ArrayList<String>(Arrays.asList(stringArray)); String[] stringArr = new String[arrayList.size()]; arrayList.toArray(stringArr); for (String s : stringArr) System.out.println(s);
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Ngonversi array menyang set (
Set
)Set<String> set = new HashSet<String>(Arrays.asList(stringArray)); System.out.println(set); //[d, e, b, c, a]
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Mbalikake array kanthi unsur ing urutan mbalikke
int[] intArray = { 1, 2, 3, 4, 5 }; ArrayUtils.reverse(intArray); System.out.println(Arrays.toString(intArray)); //[5, 4, 3, 2, 1]
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Mbusak unsur saka larik
int[] intArray = { 1, 2, 3, 4, 5 }; int[] removed = ArrayUtils.removeElement(intArray, 3);//create a new array System.out.println(Arrays.toString(removed));
Lan siji liyane - nggawe array saka jinis
byte
adhedhasar nilai saka jinisint
(approx. njupukByteBuffer
, pilih 4 bait ing lan sijine nomerint
8, banjur ngowahi kabeh iki (0, 0, 0, 8) menyang Uploaded jinisbyte
nggunakake telponarray()
)byte[] bytes = ByteBuffer.allocate(4).putInt(8).array(); for (byte t : bytes) { System.out.format("0x%x ", t); }
10 Teknik Array sing Biasa Digunakna ing Jawa
Ing ngisor iki 10 teknik kanggo array ing Jawa sing umum digunakake. Dheweke duwe peringkat paling dhuwur ing Stack Overflow, sistem pitakonan lan jawaban babagan pemrograman.
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