小编Ole*_*nko的帖子

什么是最好的Maven(特别是Maven 3)集成的免费Java IDE？

我可以编译,但不能执行以下代码与错误(使用Postgres):

Fatal database error
ERROR: syntax error at or near "as"
Position: 13

import java.sql.*;
public class JDBCExample
{
private static final String JDBC_DRIVER = "org.postgresql.Driver";
private static final String URL = "jdbc:postgresql://hostname/database";
private static final String USERNAME = "username";
private static final String PASSWORD = "password";

public static void main(String[] args) throws Exception
{
  Connection dbConn = null;
  Statement query = null;
  ResultSet results = null;

  Class.forName(JDBC_DRIVER);

  try
  {
     dbConn = DriverManager.getConnection(URL, USERNAME, PASSWORD);
  }
  catch (SQLException e)
  { …

我最近在我的Ubuntu上安装了Java SE 7并尝试使用switch on string编译代码,但是无法做到这一点.我从命令行编译.为什么？

java -version
java version "1.7.0"
Java(TM) SE Runtime Environment (build 1.7.0-b146)
Java HotSpot(TM) Server VM (build 21.0-b16, mixed mode)

 incompatible types
 found   : java.lang.String
 required: int
        switch(attributes.getValue("tod")){
                                  ^
 1 error