blocks|key|547272|text|您可以将数组包装为列表，并请求它的子列表。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|547273|MyClass[]+array+=+...;
List<MyClass>+subArray+=+Arrays.asList(array).subList(index,+array.length);|code-block|syntax|javascript|547274|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You could wrap your array as a list, and request a sublist of it.

<pre><code>MyClass[] array = ...;
List&lt;MyClass&gt; subArray = Arrays.asList(array).subList(index, array.length);
</code></pre>

blocks|key|547180|text|可以，您可以使用Arrays.copyOfRange|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|547181|它做的是同样的事情(注意这里有一个副本:您不改变初始数组)。|547182|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.oracle.com/javase/6/docs/api/java/util/Arrays.html^0|8|I|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

Yes, you can use <a href="http://docs.oracle.com/javase/6/docs/api/java/util/Arrays.html" rel="noreferrer">Arrays.copyOfRange</a>

It does about the same thing (note there is a copy : you don't change the initial array).

blocks|key|547294|text|您可以尝试：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|547295|System.arraycopy(sourceArray,+0,+targetArray,+0,+targetArray.length);//+copies+whole+array

//+copies+elements+1+and+2+from+sourceArray+to+targetArray
System.arraycopy(sourceArray,+1,+targetArray,+0,+2);+|code-block|syntax|javascript|547296|参见javadoc+for+System。|offset|length|547297|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.oracle.com/javase/7/docs/api/java/lang/System.html^0|0|0|2|I|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

You can try: 

<pre><code>System.arraycopy(sourceArray, 0, targetArray, 0, targetArray.length);// copies whole array

// copies elements 1 and 2 from sourceArray to targetArray
System.arraycopy(sourceArray, 1, targetArray, 0, 2); 
</code></pre>

See <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/System.html" rel="noreferrer">javadoc for System</a>.

blocks|key|547238|text|查看copyOfRange；示例：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|547239|int[]+arr2+=+Arrays.copyOfRange(arr,0,3);|code-block|syntax|javascript|547240|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.oracle.com/javase/6/docs/api/java/util/Arrays.html#copyOfRange%2528boolean[],%2520int,%2520int%2529^0|2|B|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

Check out <a href="http://docs.oracle.com/javase/6/docs/api/java/util/Arrays.html#copyOfRange%28boolean[],%20int,%20int%29" rel="nofollow noreferrer">copyOfRange</a>; and example:

<pre><code>int[] arr2 = Arrays.copyOfRange(arr,0,3);
</code></pre>

blocks|key|330399|text|您可以使用类似下面的内容：Arrays#copyOfRange|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|330400|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.oracle.com/javase/7/docs/api/java/util/Arrays.html#copyOfRange%2528boolean%255B%255D,%2520int,%2520int%2529^0|D|I|D|I|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@$9|Q|A|R|1|S]]|E|$]]|$1|F|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

You can use something like this: <a href="http://docs.oracle.com/javase/7/docs/api/java/util/Arrays.html#copyOfRange%28boolean%5B%5D,%20int,%20int%29" rel="nofollow"><code>Arrays#copyOfRange</code></a>

blocks|key|330587|text|public+static+int[]+range(int[]+array,+int+start,+int+end){
++++++++int+returner[]+=+new+int[end-start];
++++++++for(int+x+=+0;+x+<=+end-start-1;+x%2B%2B){
++++++++++++returner[x]+=+array[x%2Bstart];
++++++++}
++++++++return+returner;
++++}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|330588|这是一种无需导入任何内容即可完成与Array.copyOfRange相同的操作的方法|unstyled|330589|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>public static int[] range(int[] array, int start, int end){
 int returner[] = new int[end-start];
 for(int x = 0; x &lt;= end-start-1; x++){
 returner[x] = array[x+start];
 }
 return returner;
 }
</code></pre>
this is a way to do the same thing as Array.copyOfRange but without importing anything

blocks|key|547359|text|您可以在整数arr上使用subList(int+fromIndex,+int+toIndex)方法，如下所示：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|547360|import+java.util.ArrayList;
import+java.util.List;

public+class+Main+{
++++public+static+void+main(String[]+args)+{
++++++++List<Integer>+arr+=+new+ArrayList<>();
++++++++arr.add(1);
++++++++arr.add(2);
++++++++arr.add(3);
++++++++arr.add(4);
++++++++List<Integer>+partialArr+=+arr.subList(1,+3);

++++++++//+print+the+subArr
++++++++for+(Integer+i:+partialArr)
++++++++++++System.out.println(i+%2B+"+");
++++}
}|code-block|syntax|javascript|547361|输出将是：2+3。|547362|注意，subList(int+fromIndex,+int+toIndex)方法在它接收到的第二个变量(var2+-+1)上执行负1，我不知道确切的原因，但这就是发生的事情，可能是为了减少超过数组大小的可能性。|547363|entityMap^0|C|Z|0|0|5|3|0|3|Z|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|O|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|P|$]]

You can use <code>subList(int fromIndex, int toIndex)</code> method on your integers arr, something like this:

<pre><code>import java.util.ArrayList;
import java.util.List;

public class Main {
 public static void main(String[] args) {
 List&lt;Integer&gt; arr = new ArrayList&lt;&gt;();
 arr.add(1);
 arr.add(2);
 arr.add(3);
 arr.add(4);
 List&lt;Integer&gt; partialArr = arr.subList(1, 3);

 // print the subArr
 for (Integer i: partialArr)
 System.out.println(i + " ");
 }
}
</code></pre>

Output will be: <code>2 3</code>.

Note that <code>subList(int fromIndex, int toIndex)</code> method performs minus 1 on the 2nd variable it receives (var2 - 1), i don't know exactly why, but that's what happens, maybe to reduce the chance of exceeding the size of the array.

I have an array of Integers in Java, I would like use only a part of it. I know in Python you can do something like this array[index:] and it returns the array from the index. Is something like this possible in Java.

Get only part of an Array in Java?

Python

Java

我在Java中有一个整数数组，我只想使用其中的一部分。我知道在Python中，你可以这样做arrayindex:它返回索引中的数组。这样的事情在Java中是可能的。

问在Java中只获取数组的一部分？
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