第1个回答 2012-12-25
package regx;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Test {
public static void main(String args[])
{
Pattern p=Pattern.compile("^\\+[0-9]+");//判断+10
//("^\\-[0-9]+") -10
Matcher m=p.matcher("+10");
p(m.matches());
}//测试为true
public static void p(Object o)
{
System.out.println(o);
}
}