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how-to-split-a-string-in-java
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‎README.md‎

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* [重写(Override)equlas和hashCode方法时应考虑的问题](https://github.com/giantray/stackoverflow-java-top-qa/blob/master/contents/what-issues-should-be-considered-when-overriding-equals-and-hashcode-in-java.md)
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* [从一个多层嵌套循环中直接跳出](https://github.com/giantray/stackoverflow-java-top-qa/blob/master/contents/breaking-out-of-nested-loops-in-java.md)
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* [如何将String转换为Int](https://github.com/giantray/stackoverflow-java-top-qa/blob/master/contents/converting-string-to-int-in-java.md)
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* [如何分割(split)string字符串](https://github.com/giantray/stackoverflow-java-top-qa/blob/master/contents/how-to-split-a-string-in-java.md)
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> 编程技巧
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- [decompiling DEX into Java sourcecode](http://stackoverflow.com/questions/1249973/decompiling-dex-into-java-sourcecode)
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- [How to create a generic array in Java?](http://stackoverflow.com/questions/529085/how-to-create-a-generic-array-in-java)
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- [Why does Math.round(0.49999999999999994) return 1](http://stackoverflow.com/questions/9902968/why-does-math-round0-49999999999999994-return-1)
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- [How to split a string in Java](http://stackoverflow.com/questions/3481828/how-to-split-a-string-in-java)
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- [Eclipse: Set maximum line length for auto formatting?](http://stackoverflow.com/questions/3697287/eclipse-set-maximum-line-length-for-auto-formatting)
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- [What is the difference between a soft reference and a weak reference in Java?](http://stackoverflow.com/questions/299659/what-is-the-difference-between-a-soft-reference-and-a-weak-reference-in-java)
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- [How to create a file and write to a file in Java?](http://stackoverflow.com/questions/2885173/how-to-create-a-file-and-write-to-a-file-in-java)
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##如何分割(split)string字符串
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使用[`String#split()`](http://docs.oracle.com/javase/8/docs/api/java/lang/String.html#split-java.lang.String-)方法
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如下所示:
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```java
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String string = "004-034556";
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String[] parts = string.split("-");
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String part1 = parts[0]; // 004
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String part2 = parts[1]; // 034556
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```
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需要注意的是,该方法的参数是个[正则表达式](http://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html#sum),要注意对某些字符做转码。例如,`.`在正则表达式中表示任意字符,因此,如果你要通过`.`号做分割,需要这样写,`split("\\.")`或者`split(Pattern.quote("."))`
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如果只是为了验证字符串中是否包含某个字符,使用[`String#contains`](http://docs.oracle.com/javase/8/docs/api/java/lang/String.html#contains-java.lang.CharSequence-)方法就行。注意该方法的参数,不是正则表达式
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stackoverflow链接:
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http://stackoverflow.com/questions/3481828/how-to-split-a-string-in-java

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