如何拆分正则表达式?(How to split a regular expression?)
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小牛编辑
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2023-12-01
问题描述 (Problem Description)
如何拆分正则表达式?
解决方案 (Solution)
下面的示例演示如何使用regex.Pattern类的Pattern.compile()方法和patternname.split()方法拆分正则表达式。
import java.util.regex.Pattern;
public class PatternSplitExample {
public static void main(String args[]) {
Pattern p = Pattern.compile(" ");
String tmp = "this is the Java example";
String[] tokens = p.split(tmp);
for (int i = 0; i < tokens.length; i++) {
System.out.println(tokens[i]);
}
}
}
结果 (Result)
上面的代码示例将产生以下结果。
this
is
the
Java
example
以下是拆分正则表达式的示例。
import java.util.regex.Pattern;
public class Main {
public static void main(String a[]) {
String s1 = "Learn how to use regular expression in Java programming. Here are most commonly used example";
Pattern p1 = Pattern.compile("(use|Java|are|use)");
String[] parts = p1.split(s1);
for(String p:parts) {
System.out.println(p);
}
}
}
上面的代码示例将产生以下结果。
Learn how to
regular expression in
programming. Here
most commonly
d example