blocks|key|2739275|text|不，这个解决方案是绝对正确的，而且非常简单。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2739276|但是请注意，这是一种非常不寻常的情况:因为String是在Java语言中专门处理的，所以即使是"foo"实际上也是一个String。因此，在普通代码中，不需要将字符串拆分成单独的char，然后再将它们连接起来。|offset|length|style|CODE|2739277|与C/C%2B%2B相比，在C/C%2B%2B中，"foo"的一侧是一堆以零字节结尾的char，另一侧是string，它们之间的许多转换都是使用遗留方法完成的。|2739278|entityMap^0|0|L|6|1B|5|1N|6|2H|4|0|H|5|Z|4|18|6|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]|$D|P|E|Q|F|G]|$D|R|E|S|F|G]|$D|T|E|U|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|V|8|@$D|W|E|X|F|G]|$D|Y|E|Z|F|G]|$D|10|E|11|F|G]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|K|$]]

No, that solution is absolutely correct and very minimal. 

Note however, that this is a very unusual situation: Because <code>String</code> is handled specially in Java, even <code>"foo"</code> is actually a <code>String</code>. So the need for splitting a String into individual <code>char</code>s and join them back is not required in normal code.

Compare this to C/C++ where <code>"foo"</code> you have a bundle of <code>char</code>s terminated by a zero byte on one side and <code>string</code> on the other side and many conversions between them due do legacy methods.

blocks|key|599862|text|String+text+=+String.copyValueOf(data);|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|599863|或|599864|String+text+=+String.valueOf(data);|599865|可以说更好(封装了new+String调用)。|599866|entityMap^0|0|13|0|0|0|Z|0|9|A|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Q|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|L|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|M|$]]

<code>String text = String.copyValueOf(data);</code> 

or 

<code>String text = String.valueOf(data);</code>

is arguably better (encapsulates the <code>new String</code> call).

blocks|key|602150|text|这会将char数组转换回字符串：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|602151|char[]+charArray+=+{'a',+'b',+'c'};
String+str+=+String.valueOf(charArray);|code-block|syntax|javascript|602152|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|$]]

This will convert char array back to string:

<pre><code>char[] charArray = {'a', 'b', 'c'};
String str = String.valueOf(charArray);
</code></pre>

blocks|key|2739521|text|String+str+=+"wwwwww3333dfevvv";
char[]+c+=+str.toCharArray();|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2739522|现在，有两种方法可以将字符数组转换为字符串。|unstyled|2739523|Arrays.toString(c);|2739524|返回字符串[w,+w,+w,+w,+w,+w,+3,+3,+3,+3,+d,+f,+e,+v,+v,+v]。|offset|length|style|CODE|2739525|和：|2739526|String.valueOf(c)|2739527|返回字符串wwwwww3333dfevvv。|2739528|摘要中的：请注意Arrays.toString(c)，因为您将得到"[w,+w,+w,+w,+w,+w,+3,+3,+3,+3,+d,+f,+e,+v,+v,+v]"而不是"wwwwww3333dfevvv"。|BOLD|2739529|entityMap^0|0|0|0|5|1C|0|0|0|5|G|0|4|2T|8|I|X|1E|2E|I|0^^$0|@$1|2|3|4|5|6|7|Z|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|11|8|@]|9|@]|A|$B|C]]|$1|I|3|J|5|F|7|12|8|@$K|13|L|14|M|N]]|9|@]|A|$]]|$1|O|3|P|5|F|7|15|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|16|8|@]|9|@]|A|$B|C]]|$1|S|3|T|5|F|7|17|8|@$K|18|L|19|M|N]]|9|@]|A|$]]|$1|U|3|V|5|F|7|1A|8|@$K|1B|L|1C|M|W]|$K|1D|L|1E|M|N]|$K|1F|L|1G|M|N]|$K|1H|L|1I|M|N]]|9|@]|A|$]]|$1|X|3|-4|5|F|7|1J|8|@]|9|@]|A|$]]]|Y|$]]

<pre class="lang-java prettyprint-override"><code>String str = "wwwwww3333dfevvv";
char[] c = str.toCharArray();
</code></pre>

Now to convert character array into String , there are two ways.

<pre class="lang-java prettyprint-override"><code>Arrays.toString(c);
</code></pre>

Returns the string <code>[w, w, w, w, w, w, 3, 3, 3, 3, d, f, e, v, v, v]</code>.

And:

<pre class="lang-java prettyprint-override"><code>String.valueOf(c)
</code></pre>

Returns the string <code>wwwwww3333dfevvv</code>.

In Summary: pay attention to <code>Arrays.toString(c)</code>, because you'll get <code>"[w, w, w, w, w, w, 3, 3, 3, 3, d, f, e, v, v, v]"</code> instead of <code>"wwwwww3333dfevvv"</code>.

blocks|key|2739449|text|java中的字符串仅仅是字符数组周围的一个对象。因此，一个|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2739450|char[]|code-block|syntax|javascript|2739451|与具有相同字符的未装箱字符串相同。通过从字符数组创建新字符串|2739452|new+String(char[])|2739453|您实际上是在告诉编译器在字符数组周围自动装箱一个String对象。|2739454|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

A String in java is merely an object around an array of chars. Hence a

<pre><code>char[]
</code></pre>

is identical to an unboxed String with the same characters. By creating a new String from your array of characters

<pre><code>new String(char[])
</code></pre>

you are essentially telling the compiler to autobox a String object around your array of characters.

blocks|key|599943|text|您可以使用String.valueOf方法。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|599944|例如,|599945|char[]+a+=+{'h',+'e',+'l',+'l',+'o',+'+',+'w',+'o',+'r',+'l',+'d'};
String+b+=+String.valueOf(a);
System.out.println("Char+Array+back+to+String+is:+"+%2B+b);|code-block|syntax|javascript|599946|有关字符数组到字符串的更多信息，请参阅下面的链接|599947|https://docs.oracle.com/javase/7/docs/api/java/lang/String.html|599948|https://www.flowerbrackets.com/convert-char-array-to-string-java/|599949|entityMap|0|LINK|mutability|MUTABLE|url|1^0|5|E|0|0|0|0|0|1R|0|0|0|1T|1|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|13|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|14|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|15|8|@]|D|@]|E|$]]|$1|O|3|P|5|6|7|16|8|@]|D|@$9|17|A|18|1|19]]|E|$]]|$1|Q|3|R|5|6|7|1A|8|@]|D|@$9|1B|A|1C|1|1D]]|E|$]]|$1|S|3|-4|5|6|7|1E|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|P]]|Z|$5|V|W|X|E|$Y|R]]]]

You can use <code>String.valueOf</code> method.

For example,

<pre><code>char[] a = {'h', 'e', 'l', 'l', 'o', ' ', 'w', 'o', 'r', 'l', 'd'};
String b = String.valueOf(a);
System.out.println("Char Array back to String is: " + b);
</code></pre>

For more on char array to string you can refer links below

<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/String.html" rel="nofollow noreferrer">https://docs.oracle.com/javase/7/docs/api/java/lang/String.html</a>

<a href="https://www.flowerbrackets.com/convert-char-array-to-string-java/" rel="nofollow noreferrer">https://www.flowerbrackets.com/convert-char-array-to-string-java/</a>

blocks|key|4638019|text|package+naresh.java;

public+class+TestDoubleString+{

++++public+static+void+main(String+args[]){
++++++++String+str="abbcccddef";++++
++++++++char+charArray[]=str.toCharArray();
++++++++int+len=charArray.length;

++++++++for(int+i=0;i<len;i%2B%2B){
++++++++++++//if+i+th+one+and+i%2B1+th+character+are+same+then+update+the+charArray
++++++++++++try{
++++++++++++++++if(charArray[i]==charArray[i%2B1]){
++++++++++++++++++++charArray[i]='0';+++++++++++++++++++
++++++++++++++++}}
++++++++++++++++catch(Exception+e){
++++++++++++++++++++System.out.println("Exception");
++++++++++++++++}
++++++++}//finally+printing+final+character+string
++++++++for(int+k=0;k<charArray.length;k%2B%2B){
++++++++++++if(charArray[k]!='0'){
++++++++++++++++System.out.println(charArray[k]);
++++++++++++}+++++++}
++++}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4638020|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>package naresh.java;

public class TestDoubleString {

 public static void main(String args[]){
 String str="abbcccddef"; 
 char charArray[]=str.toCharArray();
 int len=charArray.length;

 for(int i=0;i&lt;len;i++){
 //if i th one and i+1 th character are same then update the charArray
 try{
 if(charArray[i]==charArray[i+1]){
 charArray[i]='0'; 
 }}
 catch(Exception e){
 System.out.println("Exception");
 }
 }//finally printing final character string
 for(int k=0;k&lt;charArray.length;k++){
 if(charArray[k]!='0'){
 System.out.println(charArray[k]);
 } }
 }
}
</code></pre>

blocks|key|600004|text|只需使用如下所示的String.value；|type|unstyled|depth|inlineStyleRanges|entityRanges|data|600005|++private+static+void+h()+{

++++++++String+helloWorld+=+"helloWorld";
++++++++System.out.println(helloWorld);

++++++++char+[]+charArr+=+helloWorld.toCharArray();

++++++++System.out.println(String.valueOf(charArr));
++++}|code-block|syntax|javascript|600006|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|$]]

Just use String.value of like below; 

<pre><code> private static void h() {

 String helloWorld = "helloWorld";
 System.out.println(helloWorld);

 char [] charArr = helloWorld.toCharArray();

 System.out.println(String.valueOf(charArr));
 }
</code></pre>

blocks|key|4355013|text|+//Given+Character+Array+
++char[]+a+=+{'h',+'e',+'l',+'l',+'o',+'+',+'w',+'o',+'r',+'l',+'d'};


++++//Converting+Character+Array+to+String+using+String+funtion+++++
++++System.out.println(String.valueOf(a));
++++//OUTPUT+:+hello+world|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4355014|使用Java8流函数将任何给定的数组类型转换为字符串的|unstyled|4355015|String+stringValue+=+
Arrays.stream(new+char[][]{a}).map(String::valueOf).collect(Collectors.joining());|4355016|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|L|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|I|3|-4|5|F|7|N|8|@]|9|@]|A|$]]]|J|$]]

<pre><code> //Given Character Array 
 char[] a = {'h', 'e', 'l', 'l', 'o', ' ', 'w', 'o', 'r', 'l', 'd'};


 //Converting Character Array to String using String funtion 
 System.out.println(String.valueOf(a));
 //OUTPUT : hello world
</code></pre>

Converting any given Array type to String using Java 8 Stream function

<pre><code>String stringValue = 
Arrays.stream(new char[][]{a}).map(String::valueOf).collect(Collectors.joining());
</code></pre>

blocks|key|600016|text|尝试使用java.util.Arrays。这个模块有许多与数组相关的有用方法。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|600017|Arrays.toString(your_array_here[]);|code-block|syntax|javascript|600018|entityMap^0|4|G|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Try to use <code>java.util.Arrays</code>. This module has a variety of useful methods that could be used related to Arrays.

<pre><code>Arrays.toString(your_array_here[]);
</code></pre>

blocks|key|4354853|text|尝尝这个|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4354854|Arrays.toString(array)|code-block|syntax|javascript|4354855|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|$]]

Try this

<pre><code>Arrays.toString(array)
</code></pre>

blocks|key|2739744|text|String+output+=+new+String(charArray);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2739745|其中charArray是字符数组，output是转换为字符串的字符数组。|unstyled|2739746|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>String output = new String(charArray);
</code></pre>
Where charArray is the character array and output is your character array converted to the string.

blocks|key|2739461|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2739462|CharSequence[]+charArray+=+{"a","b","c"};

for+(int+i+=+0;+i+<+charArray.length;+i%2B%2B){
++++String+str+=+charArray.toString().join("",+charArray[i]);
++++System.out.print(str);
}|code-block|syntax|javascript|2739463|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|$]]

Try this:

<pre><code>CharSequence[] charArray = {"a","b","c"};

for (int i = 0; i &lt; charArray.length; i++){
 String str = charArray.toString().join("", charArray[i]);
 System.out.print(str);
}
</code></pre>

blocks|key|4354784|text|您还可以使用StringBuilder类|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4354785|String+b+=+new+StringBuilder(a).toString();|code-block|syntax|javascript|4354786|String或StringBuilder的使用因您的方法要求而异。|4354787|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You can also use StringBuilder class

<pre><code>String b = new StringBuilder(a).toString();
</code></pre>

Use of String or StringBuilder varies with your method requirements.

blocks|key|2739374|text|另一种方法是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2739375|String+b+=+a+%2B+"";|code-block|syntax|javascript|2739376|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|$]]

1 alternate way is to do:

<pre><code>String b = a + "";
</code></pre>

I have a char array:

<pre><code>char[] a = {'h', 'e', 'l', 'l', 'o', ' ', 'w', 'o', 'r', 'l', 'd'};
</code></pre>

My current solution is to do 

<pre><code>String b = new String(a);
</code></pre>

But surely there is a better way of doing this?

How to convert a char array back to a string?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

我有一个char数组：char[] a = {'h', 'e', 'l', 'l', 'o', ' ', 'w', 'o', 'r', 'l', 'd'};我目前的解决方案是String b = new String(a);但肯定有更好的方法来做到这一点？

问如何将char数组转换回字符串？
EN

回答 15

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何将char数组转换回字符串？EN

回答 15

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何将char数组转换回字符串？
EN