java实现mysql数据库增删改查

1.连接数据库:

import java.sql.Connection;
import java.sql.DriverManager;

public class DBConnection {
	static String driver = "com.mysql.jdbc.Driver";
	static String url= "jdbc:mysql://localhost:3306/mydatabase01?useUnicode=true&characterEncoding=utf-8";
	static  String user = "root";
	static  String password = "123456";
	    
	    public Connection conn;
	    
	    static {
	    	
	    	try {
	    		System.out.println("驱动加载开始=====================");
				Class.forName(driver);
				System.out.println("驱动加载完毕==================");
				
			} catch (ClassNotFoundException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}// 加载驱动程序
	    }

	    public DBConnection() {

	        try {
	            
	            conn = (Connection) DriverManager.getConnection(url, user, password);// 连接数据库
	            
	            if(!conn.isClosed())
	                System.out.println("Succeeded connecting to the Database!"); 
	        } catch (Exception e) {
	            e.printStackTrace();
	        }
	    }
	    
	    public void close() {
	        try {
	            this.conn.close();
	        } catch (Exception e) {
	            e.printStackTrace();
	        }
	    }

}
import java.sql.Connection;
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