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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Thu Apr 27 23:36:31 PDT 2000 --><TITLE>Java 2 Platform SE v1.3: Class DriverManager</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/DriverManager.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Java<sup><font size=-2>TM</font></sup> 2 Platform<br>Std. Ed. v1.3</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../java/sql/Date.html"><B>PREV CLASS</B></A> <A HREF="../../java/sql/DriverPropertyInfo.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="DriverManager.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">java.sql</FONT><BR>Class DriverManager</H2><PRE><A HREF="../../java/lang/Object.html">java.lang.Object</A> | +--<B>java.sql.DriverManager</B></PRE><HR><DL><DT>public class <B>DriverManager</B><DT>extends <A HREF="../../java/lang/Object.html">Object</A></DL><P><P>The basic service for managing a set of JDBC drivers.<br> <B>NOTE:</B> The <code>DataSource</code> interface, new in the JDBC 2.0 API, provides another way to connect to a data source. The use of a <code>DataSource</code> object is the preferred means of connecting to a data source. <P>As part of its initialization, the <code>DriverManager</code> class will attempt to load the driver classes referenced in the "jdbc.drivers" system property. This allows a user to customize the JDBC Drivers used by their applications. For example in your ~/.hotjava/properties file you might specify: <pre> <CODE>jdbc.drivers=foo.bah.Driver:wombat.sql.Driver:bad.taste.ourDriver</CODE> </pre> A program can also explicitly load JDBC drivers at any time. For example, the my.sql.Driver is loaded with the following statement: <pre> <CODE>Class.forName("my.sql.Driver");</CODE> </pre> <P>When the method <code>getConnection</code> is called, the <code>DriverManager</code> will attempt to locate a suitable driver from amongst those loaded at initialization and those loaded explicitly using the same classloader as the current applet or application. <P> Starting with the Java 2 SDK, Standard Edition, version 1.3, a logging stream can be set only if the proper permission has been granted. Normally this will be done with the tool PolicyTool, which can be used to grant <code>permission java.sql.SQLPermission "setLog"</code>.<P><DL><DT><B>See Also: </B><DD><A HREF="../../java/sql/Driver.html"><CODE>Driver</CODE></A>, <A HREF="../../java/sql/Connection.html"><CODE><P> Some methods in this class are new in the JDBC 2.0 API. They are marked with "since 1.2". API marked "since 1.3" is new in the JDBC 2.0 API and is included in the Java 2 SDK, Standard Edition, version 1.3.</CODE></A></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/sql/DriverManager.html#deregisterDriver(java.sql.Driver)">deregisterDriver</A></B>(<A HREF="../../java/sql/Driver.html">Driver</A> driver)</CODE><BR> Drops a Driver from the <code>DriverManager</code>'s list.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/sql/Connection.html">Connection</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/sql/DriverManager.html#getConnection(java.lang.String)">getConnection</A></B>(<A HREF="../../java/lang/String.html">String</A> url)</CODE><BR> Attempts to establish a connection to the given database URL.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/sql/Connection.html">Connection</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/sql/DriverManager.html#getConnection(java.lang.String, java.util.Properties)">getConnection</A></B>(<A HREF="../../java/lang/String.html">String</A> url, <A HREF="../../java/util/Properties.html">Properties</A> info)</CODE><BR> Attempts to establish a connection to the given database URL.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/sql/Connection.html">Connection</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/sql/DriverManager.html#getConnection(java.lang.String, java.lang.String, java.lang.String)">getConnection</A></B>(<A HREF="../../java/lang/String.html">String</A> url, <A HREF="../../java/lang/String.html">String</A> user, <A HREF="../../java/lang/String.html">String</A> password)</CODE><BR> Attempts to establish a connection to the given database URL.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/sql/Driver.html">Driver</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/sql/DriverManager.html#getDriver(java.lang.String)">getDriver</A></B>(<A HREF="../../java/lang/String.html">String</A> url)</CODE><BR> Attempts to locate a driver that understands the given URL.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/util/Enumeration.html">Enumeration</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/sql/DriverManager.html#getDrivers()">getDrivers</A></B>()</CODE><BR> Retrieves an Enumeration with all of the currently loaded JDBC drivers to which the current caller has access.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/sql/DriverManager.html#getLoginTimeout()">getLoginTimeout</A></B>()</CODE><BR> Gets the maximum time in seconds that a driver can wait when attempting to log in to a database.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/io/PrintStream.html">PrintStream</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/sql/DriverManager.html#getLogStream()">getLogStream</A></B>()</CODE><BR> <B>Deprecated.</B> <I></I> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/io/PrintWriter.html">PrintWriter</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/sql/DriverManager.html#getLogWriter()">getLogWriter</A></B>()</CODE><BR> Gets the log writer.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/sql/DriverManager.html#println(java.lang.String)">println</A></B>(<A HREF="../../java/lang/String.html">String</A> message)</CODE><BR> Prints a message to the current JDBC log stream.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/sql/DriverManager.html#registerDriver(java.sql.Driver)">registerDriver</A></B>(<A HREF="../../java/sql/Driver.html">Driver</A> driver)</CODE><BR> Registers the given driver with the <code>DriverManager</code>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/sql/DriverManager.html#setLoginTimeout(int)">setLoginTimeout</A></B>(int seconds)</CODE><BR> Sets the maximum time in seconds that a driver will wait while attempting to connect to a database.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/sql/DriverManager.html#setLogStream(java.io.PrintStream)">setLogStream</A></B>(<A HREF="../../java/io/PrintStream.html">PrintStream</A> out)</CODE><BR> <B>Deprecated.</B> <I></I> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/sql/DriverManager.html#setLogWriter(java.io.PrintWriter)">setLogWriter</A></B>(<A HREF="../../java/io/PrintWriter.html">PrintWriter</A> out)</CODE><BR> Sets the logging/tracing <code>PrintWriter</code> object that is used by the <code>DriverManager</code> and all drivers.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.<A HREF="../../java/lang/Object.html">Object</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../java/lang/Object.html#clone()">clone</A>, <A HREF="../../java/lang/Object.html#equals(java.lang.Object)">equals</A>, <A HREF="../../java/lang/Object.html#finalize()">finalize</A>, <A HREF="../../java/lang/Object.html#getClass()">getClass</A>, <A HREF="../../java/lang/Object.html#hashCode()">hashCode</A>, <A HREF="../../java/lang/Object.html#notify()">notify</A>, <A HREF="../../java/lang/Object.html#notifyAll()">notifyAll</A>, <A HREF="../../java/lang/Object.html#toString()">toString</A>, <A HREF="../../java/lang/Object.html#wait()">wait</A>, <A HREF="../../java/lang/Object.html#wait(long)">wait</A>, <A HREF="../../java/lang/Object.html#wait(long, int)">wait</A></CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="getLogWriter()"><!-- --></A><H3>getLogWriter</H3>⌨️ 快捷键说明
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