Eclipse JDBC连接Oracle数据库一直出现异常

Question

public class Jdbc1 {    public static void main(String[] args) throws ClassNotFoundException, SQLException {            Class.forName("oracle.jdbc.OracleDriver");            //System.out.println("OK");            String url = "jdbc:oracle:thin:@192.168.1.102:1521:orcl";            String username = "system";            String password = "orcl";            Connection conn = DriverManager.getConnection(url, username, password);            System.out.println(conn.getClass());    }}Exception in thread "main" java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:255)    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387)    at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:439)    at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)    at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)    at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)    at java.sql.DriverManager.getConnection(DriverManager.java:664)    at java.sql.DriverManager.getConnection(DriverManager.java:247)    at cn.csq.jdbc.Jdbc1.main(Jdbc1.java:15)一直提示这个异常，网上找了好多方法都不行啊啊，有大神知道哪里错了吗？我在sqlplus能连接数据库，在PLSQL Developer也能进去，求指导，感激不尽

Answer 1

//你的驱动类写错了
Class.forName("oracle.jdbc.driver.OracleDriver");