java in easy steps

Premise:1.windows 10 System (not win8, nor Win7)2. Installing the JDKSteps1. Open the Environment Variables windowRight-click this PC (the computer), properties (property), Advanced system settings, Environment Variables (environment variable) ...2. New Java_home variableClick New (New) ... ButtonInput:Variable name: java_homeVariable value: The absolute path to the JDK installation on your computerClick OK when you are finished typing.You must be able to see the following files under the JDK pa

is not always feel that the Java button is difficult to look at, especially toolbar buttons, if you can make a cool button like word how good, in fact, with Java to achieve, it is not difficult, as long as 3 steps on it. That simple? Right! It's so simple. The first step: Prepare a BORDER,JDK not bring a lot of border class, why do you write? Because the JDK bor

JDBC Connection Database• Create a program that connects the database with JDBC, which contains 7 steps:1. Load JDBC Driver:before you connect to a database, you first load the drive to the JVM (Java Virtual Machine) of the database you want to connect to.This is implemented by the static method forname (String className) of the Java.lang.Class class.For example: try{ //loading MySQL driver class

Create a new folder in your project before you write the code, then copy the Java and MySQL drives into it and add it to build path, OK.Import java.sql.Connection;Import Java.sql.DriverManager;Import Java.sql.ResultSet;Import java.sql.Statement;public class JBD {private static final String URL = "JDBC:MYSQL://127.0.0.1:3306/IMOOC";private static final String USER = "root";private static final String PASSWORD = "OpenLab";/*** @param args*/public static

Tags: BSP. SQL system Apache ring IMP ETL SQL orgImportjava.sql.Connection;ImportJava.sql.DriverManager;Importjava.sql.SQLException;ImportOrg.apache.log4j.Logger; Public classTest1 {Private StaticLogger Logger=logger.getlogger (Test1.class. GetName ()); Public Static voidmain (String [] args) {Connection conn=NULL; //Load Driver Try{class.forname ("Oracle.jdbc.OracleDriver"); } Catch(ClassNotFoundException e) {logger.error (e); } //Establish a connection Try{conn= Driverman