Java

Javaコード：
public synchronized static void init() throws Exception {
TreeMap<String, String> map;
Dem ...

Java

Javaコード:
private static DepartUtil instance;
private DepartUtil() {
}
public static DepartUtil getIns ...

Java

Javaコード:
public static Timestamp createTimestampObj(String value, String format) {
SimpleDateFormat sdf = new ...

Java

javaコード:
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.FileInputStrea ...

Java

環境
Java 8
Eclipse 4.14.0

書式
pdfファイルのASCIIコードの要素は「%PDF-」です。
byte 配列名 ={‘%’,’P& ...

Java

Javaコード
package com.kak222;
public class Huhh2 {

public static void main(String[] args) {
String c1 ...

Java

1.Actionの書き方

public class LoginActionTwo extends ActionSupport implements RequestAware,SessionAware, Applicatio ...

Java

Javaコード:
package com.opensymphony.xwork2;
public interface Action {
public static final String SUCCESS = ...

Java

Javaコード
DbConn.properties
initialSize=1
maxActive=1
maxIdle=1
maxWait=10000
username=xxx ...

Linux

操作コマンド

#sudo yum -y install nginx
# sudo/sbin/iptables -I INPUT 5 -p tcp -m tcp –dport 80 -j ACCEPT

Linux

# cat/etc/redhat-release
CentOS Linux release 7.3.1611 (Core)

# vim/etc/firewalld/zones/public.xml
< ...

Linux

CentOSのバージョンは、/etc/redhat-releaseファイル
# cat/etc/redhat-release
CentOS Linux release 7.3.1611 (Core)

JavaScript

1.test()
var str = “1a1b1c”;
var reg = new RegExp(“1.”, “”);
alert(re ...

Java

Javaコード
HttpSession session = request.getSession();
session.setAttribute(“demo_startnews24”, R ...

Java

Javaコード
public class Demo {

public static void main(String[] args) {
String text = “”; ...

Linux

1.エラー現象
$ sudo su
password for mastodon:
mastodon is not in the sudoers file. This incident will be repor ...

PHP

方法1–Smarty
<?php
require(“smarty/Smarty.class.php”);
$t = new Smarty;
$t->ass ...

MySQL

方法1
SELECT *
FROM changfatbl AS r1 JOIN
(SELECT ROUND(RAND() *
(SELECT MAX(id)
FROM changfatbl)) ...