0. 宣告陣列
string[
] aarray =
newstring[5
];string[
] barray =
;string[
] carray =
newstring
;
int
intarray =
;string intarraystring = arrays.
tostring
(intarray)
;// 直接列印,則會列印出引用物件的hash值
// [i@7150bd4d
system.out.
println
(intarray)
;// [1, 2, 3, 4, 5]
system.out.
println
(intarraystring)
;
string[
] stringarray =
;arraylist
arraylist =
newarraylist
(arrays.
aslist
(stringarray));
// [a, b, c, d, e]
system.out.
println
(arraylist)
;
string[
] stringarray =
;boolean b = arrays.
aslist
(stringarray)
.contains
("a");
// true
system.out.
println
(b);
int
intarray =
;int
intarray2 =
;// apache commons lang 庫
int[
] combinedintarray = arrayutils.
addall
(intarray, intarray2)
;
// containing the provided list of elements
// apache common lang
string j = stringutils.
join
(new
string
,", ");
// a, b, c
system.out.
println
(j);
string[
] stringarray =
;arraylist
arraylist =
newarraylist
(arrays.
aslist
(stringarray));
string[
] stringarr =
newstring
[arraylist.
size()
];arraylist.
toarray
(stringarr)
;for
(string s : stringarr)
system.out.
println
(s);
set
set =
newhashset
(arrays.
aslist
(stringarray));
//[d, e, b, c, a]
system.out.
println
(set)
;
int
intarray =
;arrayutils.
reverse
(intarray)
;//[5, 4, 3, 2, 1]
system.out.
println
(arrays.
tostring
(intarray)
);
int
intarray =
;int
removed = arrayutils.
removeelement
(intarray,3)
;//建立新的陣列
system.out.
println
(arrays.
tostring
(removed));
更多——轉換int值為位元組陣列
byte
bytes = bytebuffer.
allocate(4
).putint(8
).array()
;for
(byte t : bytes)
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