随笔-2  评论-16  文章-12  trackbacks-0

<%@ page import="java.util.regex.*"%>
<%
Pattern p=null; //正则表达式
Matcher m=null; //操作的字符串
boolean b;
String s=null;
StringBuffer ***=null;
int i=0;
//字符串匹配,这是不符合的
p = Pattern.compile("a*b");
m = p.matcher("baaaaab");
b = m.matches();
out.println(b+"<br>");
//字符串匹配,这是符合的
p = Pattern.compile("a*b");
m = p.matcher("aaaaab");
b = m.matches();
out.println(b+"<br>");
//字符串替换
p = Pattern.compile("ab");
m = p.matcher("aaaaab");
s = m.replaceAll("d");
out.println(s+"<br>");
p = Pattern.compile("a*b");
m = p.matcher("aaaaab");
s = m.replaceAll("d");
out.println(s+"<br>");
p = Pattern.compile("a*b");
m = p.matcher("caaaaab");
s = m.replaceAll("d");
out.println(s+"<br>");
//字符串查找
p = Pattern.compile("cat");
m = p.matcher("one cat two cats in the yard");
*** = new StringBuffer();
while (m.find()) {
m.appendReplacement(***, "dog");
i++;
}
m.appendTail(***);
out.println(***.toString()+"<br>");
out.println(i+"<br>");
i=0;
p = Pattern.compile("cat");
m = p.matcher("one cat two ca tsi nthe yard");
*** = new StringBuffer();
while (m.find()) {
m.appendReplacement(***, "dog");
i++;
}
m.appendTail(***);
out.println(***.toString()+"<br>");
out.println(i+"<br>");
p = Pattern.compile("cat");
m = p.matcher("one cat two cats in the yard");
p=m.pattern();
m = p.matcher("bacatab");
b = m.matches();
out.println(b+"<br>");
s = m.replaceAll("dog");
out.println(s+"<br>");
i=0;
p = Pattern.compile("(fds){2,}");
m = p.matcher("dsa da fdsfds aaafdsafds aaf");
*** = new StringBuffer();
while (m.find()) {
m.appendReplacement(***, "dog");
i++;
}

m.appendTail(***);
out.println(***.toString()+"<br>");
out.println(i+"<br>");

p = Pattern.compile("cat");
m = p.matcher("one cat two cats in the yard");
*** = new StringBuffer();
while (m.find()) {
m.appendReplacement(***, "<font color=\"red\">cat</font>");
}
m.appendTail(***);
out.println(***.toString()+"<br>");
String aa=***.toString();
out.println(aa+"<br>");
//字符串分割
p = Pattern.compile("a+");
String[] a=p.split("caaaaaat");
for(i=0;i<a.length;i++)
{
out.println(a[i]+"<br>");
}
p = Pattern.compile("a+");
a=p.split("c aa aaaa t",0);
for(i=0;i<a.length;i++)
{
out.println(a[i]+"<br>");
}
p = Pattern.compile(" +");
a=p.split("c aa aaaa t",0);
for(i=0;i<a.length;i++)
{
out.println(a[i]+"<br>");
}
p = Pattern.compile("\\+");
a=p.split("dsafasdfdsafsda+dsagfasdfa+sdafds");
out.println(a.length+"<br>");
for(i=0;i<a.length;i++)
{
out.println(a[i]+"<br>");
}
%>

posted on 2006-03-13 17:51 fadesea 阅读(154) 评论(0)  编辑  收藏 所属分类: JAVA

只有注册用户登录后才能发表评论。


网站导航: