本文分享了关于Java数组最顶级的11大方法，帮助你解决工作流程问题，无论是运用在团队环境或是在私人项目中，你都可以直接拿来用！
0.声明一个数组（Declareanarray）
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String[]aArray=
newString[5];
String[]bArray={"a","b","c","d","e"};
String[]cArray=
newString[]{"a","b","c","d","e"};
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int[]intArray={1,2,3,4,5};
StringintArrayString=Arrays.toString(intArray);
//printdirectlywillprintreferencevalue
System.out.println(intArray);
//[I@7150bd4d
System.out.println(intArrayString);
//[1,2,3,4,5]
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String[]stringArray={
"a","b","c","d","e"};
ArrayList<String>arrayList=
newArrayList<String>(Arrays.asList(stringArray));
System.out.println(arrayList);
//[a,b,c,d,e]
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String[]stringArray={
"a","b","c","d","e"};
booleanb=Arrays.asList(stringArray).contains("a");
System.out.println(b);
//true
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int[]intArray={1,2,3,4,5};
int[]intArray2={6,7,8,9,10};
//ApacheCommonsLanglibrary
int[]combinedIntArray=ArrayUtils.addAll(intArray,intArray2);
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method(
newString[]{"a","b","c","d","e"});
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6.将数组元素加入到一个独立的字符串中（JoinstheelementsoftheprovidedarrayintoasingleString）
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//containingtheprovidedlistofelements
//Apachecommonlang
Stringj=StringUtils.join(
newString[]{"a","b","c"},",");
System.out.println(j);
//a,b,c
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String[]stringArray={
"a","b","c","d","e"};
ArrayList<String>arrayList=
newArrayList<String>(Arrays.asList(stringArray));
String[]stringArr=
newString[arrayList.size()];
arrayList.toArray(stringArr);
for(Strings:stringArr)
System.out.println(s);
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Set<String>set=
newHashSet<String>(Arrays.asList(stringArray));
System.out.println(set);
//[d,e,b,c,a]
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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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int[]intArray={1,2,3,4,5};
int[]removed=ArrayUtils.removeElement(intArray,3);//createanewarray
System.out.println(Arrays.toString(removed));
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byte[]bytes=ByteBuffer.allocate(4).putInt(8).array();
for(bytet:bytes){
System.out.format("0x%x",t);
}
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英文出自：Programcreek
本文转自 huohe2009 51CTO博客，原文链接:http://blog.51cto.com/zhaojie/1299536
