blocks|key|395923|text|您可以通过省略break;语句来使用switch-case+fall+through。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|395924|char+c+=+/*+whatever+*/;

switch(c)+{
++++case+'a':
++++case+'A':
++++++++//get+the+'A'+image;
++++++++break;
++++case+'b':
++++case+'B':
++++++++//get+the+'B'+image;
++++++++break;
++++//+(...)
++++case+'z':
++++case+'Z':
++++++++//get+the+'Z'+image;
++++++++break;
}|code-block|syntax|javascript|395925|在switching之前，你可以将其标准化为lower+case或upper+case。|395926|char+c+=+Character.toUpperCase(/*+whatever+*/);

switch(c)+{
++++case+'A':
++++++++//get+the+'A'+image;
++++++++break;
++++case+'B':
++++++++//get+the+'B'+image;
++++++++break;
++++//+(...)
++++case+'Z':
++++++++//get+the+'Z'+image;
++++++++break;
}|395927|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.oracle.com/javase/7/docs/api/java/lang/Character.html#toLowerCase%2528char%2529|1|http://docs.oracle.com/javase/7/docs/api/java/lang/Character.html#toUpperCase%2528char%2529^0|7|6|0|0|1|6|M|A|0|X|A|1|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@$9|15|A|16|1|17]|$9|18|A|19|1|1A]]|E|$]]|$1|M|3|N|5|H|7|1B|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|1C|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]|W|$5|R|S|T|E|$U|X]]]]

You can use switch-case fall through by omitting the <code>break;</code> statement.

<pre><code>char c = /* whatever */;

switch(c) {
 case 'a':
 case 'A':
 //get the 'A' image;
 break;
 case 'b':
 case 'B':
 //get the 'B' image;
 break;
 // (...)
 case 'z':
 case 'Z':
 //get the 'Z' image;
 break;
}
</code></pre>

...or you could just normalize to <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Character.html#toLowerCase%28char%29">lower case</a> or <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Character.html#toUpperCase%28char%29">upper case</a> before <code>switch</code>ing.

<pre><code>char c = Character.toUpperCase(/* whatever */);

switch(c) {
 case 'A':
 //get the 'A' image;
 break;
 case 'B':
 //get the 'B' image;
 break;
 // (...)
 case 'Z':
 //get the 'Z' image;
 break;
}
</code></pre>

blocks|key|611990|text|上面，你的意思是或者不是AND。和的例子:+110+&+011+==+010，这两个都不是你想要的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|611991|对于OR，只有2个案例，在1号没有中断。例如：|611992|case+'a':
case+'A':
++//+do+stuff
++break;|code-block|syntax|javascript|611993|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Above, you mean OR not AND. Example of AND: 110 &amp; 011 == 010 which is neither of the things you're looking for.

For OR, just have 2 cases without the break on the 1st. Eg:

<pre><code>case 'a':
case 'A':
 // do stuff
 break;
</code></pre>

blocks|key|612070|text|以上都是很好的答案。我只是想补充一下，当有多个字符需要检查时，if-else可能会更好，因为您可以改为编写以下代码。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|612071|//+switch+on+vowels,+digits,+punctuation,+or+consonants
char+c;+//+assign+some+character+to+'c'
if+("aeiouAEIOU".indexOf(c)+!=+-1)+{
++//+handle+vowel+case
}+else+if+("!@#$%25,.".indexOf(c)+!=+-1)+{
++//+handle+punctuation+case
}+else+if+("0123456789".indexOf(c)+!=+-1)+{
++//+handle+digit+case
}+else+{
++//+handle+consonant+case,+assuming+other+characters+are+not+possible
}|code-block|syntax|javascript|612072|当然，如果这变得更复杂，我会推荐一个正则表达式匹配器。|612073|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|$]]

The above are all excellent answers. I just wanted to add that when there are multiple characters to check against, an if-else might turn out better since you could instead write the following.

<pre><code>// switch on vowels, digits, punctuation, or consonants
char c; // assign some character to 'c'
if ("aeiouAEIOU".indexOf(c) != -1) {
 // handle vowel case
} else if ("!@#$%,.".indexOf(c) != -1) {
 // handle punctuation case
} else if ("0123456789".indexOf(c) != -1) {
 // handle digit case
} else {
 // handle consonant case, assuming other characters are not possible
}
</code></pre>

Of course, if this gets any more complicated, I'd recommend a regex matcher.

blocks|key|612152|text|根据我对您问题的理解，在将字符传递到switch语句之前，您可以将其转换为小写。所以你不必担心大写字母，因为它们会自动转换成小写字母。为此，您需要使用以下函数：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|612153|Character.toLowerCase(c);|code-block|syntax|javascript|612154|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|$]]

From what I understand about your question, before passing the character into the switch statement, you can convert it to lowercase. So you don't have to worry about upper cases because they are automatically converted to lower case.
For that you need to use the below function:

<pre><code>Character.toLowerCase(c);
</code></pre>

I implemented a font system that finds out which letter to use via char switch statements. There are only capital letters in my font image. I need to make it so that, for example, 'a' and 'A' both have the same output. Instead of having 2x the amount of cases, could it be something like the following:

<pre><code>char c;

switch(c){
case 'a' &amp; 'A': /*get the 'A' image*/; break;
case 'b' &amp; 'B': /*get the 'B' image*/; break;
...
case 'z' &amp; 'Z': /*get the 'Z' image*/; break;
}
</code></pre>

Is this possible in java?

Java Switch Statement - Is "or"/"and" possible?

我实现了一个字体系统，它通过char switch语句找出要使用的字母。我的字体图像中只有大写字母。我需要让它，例如，'a‘和'A’都有相同的输出。而不是2倍的案例数量，它可能是如下所示：char c;switch(c){case 'a' & 'A': /*get the 'A' image*/; break;case...

问Java Switch语句-“或”/“and”可能吗？
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