javaʵÏÖÊä³ö×Ö·û´®ÖеÄÊý×Ö×Ö·û
package com.joe;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Test
{
//½«×Ö·û´®µÄÊý×Ö×Ö·ûÊä³ö
public static void main(String[] args)
{
String str = "iu7i8hy4jnb2";
//·½·¨Ò»
String vString = str.replaceAll("[\\D]", ""); // [\D] == [^\d] == [^0-9]
System.out.println(vString);
//·½·¨¶þ
String regex = "\\d";
Matcher m = Pattern.compile(regex).matcher(str);
while(m.find())
{
System.out.print(m.group());
}
System.out.println();
}
}
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public class Hello{
public static void main(String[] args){//(1)
System.out.println("Hello,world!");//(2)
}
}
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