Java读写cookie
Java读写cookie
/*
* 写cookie
*/
Cookie namecookie = new Cookie("name",name);
Cookie passwordcookie = new Cookie("password",password);
Cookie optioncookie = new Cookie("option","1");
//生命周期
namecookie.setMaxAge(60*60*24*365);
passwordcookie.setMaxAge(60*60*24*365);
optioncookie.setMaxAge(60*60*24*365);
response.addCookie(namecookie);
response.addCookie(passwordcookie);
response.addCookie(optioncookie);
/*
* 读cookie
*/
Cookie[] cookies = request.getCookies();
if(cookies!=null)
{
String name = "";
String password = "";
String option = "";
for (int i = 0; i < cookies.length; i++)
{
Cookie c = cookies[i];
if(c.getName().equalsIgnoreCase("name"))
{
name = c.getValue();
}
else if(c.getName().equalsIgnoreCase("password"))
{
password = c.getValue();
}
else if(c.getName().equalsIgnoreCase("option"))
{
option = c.getValue();
}
}
}
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1.简单线程创建
(1)实现Runnable接口，Runnable接口只有一个方法run:
public interface Runnable
{
void run();
}
创建类实现run方法
class MyRunnable implements Runnable
{
public void run()
{
/*任务代码*/
}
}
(2)创建对象
Runnable r = new MyRunnable();
(3)由Runnable创建一个Thread对象:
......
编译并运行下面的程序，其结果是什么？
public class MyClass {
public static void main(String[] args) {
String str1 = "str1";
String str2 = "str2";
String str3 = "str3";
str1.concat(str2);
System.out.println(str3.concat(str1));
}
}
请选择正确的答案。
......
String srt="abc?abc";
str.replaceAll("?", "#");
会提示这样的错误
Dangling meta character '?' near index 0
?
^
at java.util.regex.Pattern.error(Unknown Source)
at java.util.regex.Pattern.sequence(Unknown Source)
at java.util.regex.Pattern.expr(Unknown Source)
at java.util.regex.Pattern.compi ......
只说说几道涉及到我有些遗忘的知识点的题目吧～～
1. 关于final的
一下哪几种声明是正确的？
A: private final int FINAL_INTEGER = 0;
B: private final int FINAL_INTEGER;
{
FINAL_INTEGER = 1;
}
C: private final int FINAL_INTEGER;
static{
FINAL_INTEGER = 1;
}
D: private final int FINA ......
