import java.util.regex.*; public class Test { public static void main(String[] args) { String s = 字符串; Pattern p = Pattern.compile("^[Hello].*$",Pattern.MULTILINE); Matcher m = p.matcher(s); while(m.find()) //找到以Hello开始的行 System.out.println(m.group(0));//输出该行 } }
给楼上修改一下,别介意哈. Pattern p = Pattern.compile("^Hello.*$",Pattern.MULTILINE);
public class Test {
public static void main(String[] args) {
String s = 字符串;
Pattern p = Pattern.compile("^[Hello].*$",Pattern.MULTILINE);
Matcher m = p.matcher(s);
while(m.find()) //找到以Hello开始的行
System.out.println(m.group(0));//输出该行 }
}
Pattern p = Pattern.compile("^Hello.*$",Pattern.MULTILINE);