java -Xbootclasspath的用法.

昨晚使用eclipse的时候突然想到eclipse怎样去区分使用jdk1.4还是jdk1.5,我使用jdk1.4在eclipse运行一个java程序这时的command是 C:\j2sdk1.4.2_05\bin\javaw.exe -Xbootclasspath:C:\j2sdk1.4.2_05\lib\tools.jar;C:\j2sdk1.4.2_05\jre\lib\rt.jar;C:\j2sdk1.4.2_05\jre\lib\sunrsasign.jar;C:\j2sdk1.4.2_05\jre\lib\jsse.jar;C:\j2sdk1.4.2_05\jre\lib\jce.jar;C:\j2sdk1.4.2_05\jre\lib\charsets.jar;C:\j2sdk1.4.2_05\jre\lib\ext\dnsns.jar;C:\j2sdk1.4.2_05\jre\lib\ext\ldapsec.jar;C:\j2sdk1.4.2_05\jre\lib\ext\localedata.jar;C:\j2sdk1.4.2_05\jre\lib\ext\sunjce_provider.jar -classpath E:\Eclipse_WorkSpace\Eclipse_Work\DateTransform\classes;E:\Eclipse_WorkSpace\Eclipse_Work\DateTransform\lib\jtds-1.0.3.jar;E:\Eclipse_WorkSpace\Eclipse_Work\DateTransform\lib\poi-2.5.1-final-20040804.jar;E:\Eclipse_WorkSpace\Eclipse_Work\DateTransform\lib\poi-contrib-2.5.1-final-20040804.jar;E:\Eclipse_WorkSpace\Eclipse_Work\DateTransform\lib\poi-scratchpad-2.5.1-final-20040804.jar;E:\Eclipse_WorkSpace\Eclipse_Work\DateTransform\lib\commons-logging-1.0.2.jar;E:\Eclipse_WorkSpace\Eclipse_Work\DateTransform\lib\log4j-1.2.6.jar -Xdebug -Xnoagent -Xrunjdwp:transport=dt_socket,suspend=y,address=localhost:1160 com.dengyin.data.transform.DoingTxt 红色部分后面的那些包是在eclipse重设置好的.这是使用这些包作为启动类.( set search path for bootstrap classes and resources )然而当我使用jdk1.5的时候的command是  C:\jdk1.5.0_03\bin\javaw.exe -classpath E:\Eclipse_WorkSpace\Eclipse_Work\DateTransform\classes;E:\Eclipse_WorkSpace\Eclipse_Work\DateTransform\lib\jtds-1.0.3.jar;E:\Eclipse_WorkSpace\Eclipse_Work\DateTransform\lib\poi-2.5.1-final-20040804.jar;E:\Eclipse_WorkSpace\Eclipse_Work\DateTransform\lib\poi-contrib-2.5.1-final-20040804.jar;E:\Eclipse_WorkSpace\Eclipse_Work\DateTransform\lib\poi-scratchpad-2.5.1-final-20040804.jar;E:\Eclipse_WorkSpace\Eclipse_Work\DateTransform\lib\commons-logging-1.0.2.jar;E:\Eclipse_WorkSpace\Eclipse_Work\DateTransform\lib\log4j-1.2.6.jar -Xdebug -Xnoagent -Xrunjdwp:transport=dt_socket,suspend=y,address=localhost:1635 com.dengyin.data.transform.DoingTxt 我们看到这时并没有-Xbootclasspath参数,我们知道java程序中的所有依赖的类都会去classpath里面照.这时我想-Xbootclasspath做的工作应该时被javaw.exe做了,把那些系统必须的那些bootClass设置到了bootClasspath里面了.(以上想法时我个人的猜测,我上网找了但是没有找到满意的答案) 当你装好了jdk1.5时,它会拷贝一份java.exe到windows(winNt)目录下面,这样你就可以不用设置JAVA_HOME然后把%JAVA_HOME%\bin放到系统的path目录了, 而且这时java.exe会自己设置好bootClass,这样你就不用在系统的环境变量里面设置ClassPath了.  -Xbootclasspath:<directories by="" separated="" files="" and="">
set search path for bootstrap classes and resources
-Xbootclasspath/a:<directories by="" separated="" files="" and="">
append to end of bootstrap class path
-Xbootclasspath/p:<directories by="" separated="" files="" and="">
prepend in front of bootstrap class path</directories></directories></directories>  最后给出些%JAVA_HOME%\bin里面一些exe的用法.(网上找的)  java.exe

用法：java [-options] class [args...]
(to execute a class)
或 java -jar [-options] jarfile [args...]
(to execute a jar file)

where options include:
-client to select the "client" VM
-server to select the "server" VM
-hotspot is a synonym for the "client" VM [deprecated]
The default VM is client.

-cp -classpath <directories by="" separated="" files="" and="">
set search path for application classes and resources
-D<name>=<value>
set a system property
-verbose[:class|gc|jni]
enable verbose output
-version print product version and exit
-showversion print product version and continue
-? -help print this help message
-X print help on non-standard options
-ea[: <packagename>...|:<classname>]
-enableassertions[: <packagename>...|:<classname>]
enable assertions
-da[: <packagename>...|:<classname>]
-disableassertions[: <packagename>...|:<classname>]
disable assertions
-esa | -enablesystemassertions
enable system assertions
-dsa | -disablesystemassertions
disable system assertions

java -X
-Xmixed mixed mode execution (default)
-Xint interpreted mode execution only
-Xbootclasspath:<directories by="" separated="" files="" and="">
set search path for bootstrap classes and resources
-Xbootclasspath/a:<directories by="" separated="" files="" and="">
append to end of bootstrap class path
-Xbootclasspath/p:<directories by="" separated="" files="" and="">
prepend in front of bootstrap class path
-Xnoclassgc disable class garbage collection
-Xincgc enable incremental garbage collection
-Xloggc:<file> log GC status to a file with time stamps
-Xbatch disable background compilation
-Xms<size> set initialJava heap size
-Xmx<size> set maximum Java heap size
-Xss<size> set java thread stack size
-Xprof output cpu profiling data
-Xrunhprof[:help]|[:=<value>, ...]
perform JVMPI heap, cpu, or monitor profiling
-Xdebug enable remote debugging
-Xfuture enable strictest checks, anticipating future default
-Xrs reduce use of OS signals by Java/VM (see documentation)

The -X options are non-standard and subject to change without notice.

====================
javac.exe

用法：javac <选项> <源文件>
可能的选项包括：
-g 生成所有调试信息
-g:none 生成无调试信息
-g:{lines,vars,source} 生成只有部分调试信息
-O 优化；可能妨碍调试或者增大类文件
-nowarn 生成无警告
-verbose 输出关于编译器正在做的信息
-deprecation 输出使用了不鼓励使用的API的源程序位置
-classpath <路径> 指定用户类文件的位置
-sourcepath <路径> 指定输入源文件的位置
-bootclasspath <路径> 覆盖自举类文件的位置
-extdirs <目录(多个)> 覆盖安装的扩展类的位置
-d <目录> 指定输出类文件的位置
-encoding <编码> 指定源文件中所用的字符集编码
-target <版本> 生成指定虚拟机版本的类文件
-help Print a synopsis of standard options

====================
appletviewer.exe

用法：appletviewer <options> url

其中， <options> 包括：
-debug 在 Java 调试器中启动 applet 小程序查看器
-encoding <encoding> 指定由 HTML 文件使用的字符编码
-J<runtime flag=""> 向 Java 解释器传递参数

-J 选项不是标准选项，如有更改，不另行通知。

====================
jar.exe

用法：jar {ctxu}[vfm0M] [jar-文件] [manifest-文件] [-C 目录] 文件名 ...
选项：
-c 创建新的存档
-t 列出存档内容的列表
-x 展开存档中的命名的（或所有的〕文件
-u 更新已存在的存档
-v 生成详细输出到标准输出上
-f 指定存档文件名
-m 包含来自标明文件的标明信息
-0 只存储方式；未用ZIP压缩格式
-M 不产生所有项的清单（manifest〕文件
-i 为指定的jar文件产生索引信息
-C 改变到指定的目录，并且包含下列文件：
如果一个文件名是一个目录，它将被递归处理。
清单（manifest〕文件名和存档文件名都需要被指定，按&aposm' 和 &aposf'标志指定的相同顺序。
示例1：将两个class文件存档到一个名为 &aposclasses.jar' 的存档文件中：
jar cvf classes.jar Foo.class Bar.class
示例2：用一个存在的清单（manifest）文件 &aposmymanifest' 将 foo/ 目录下的所有
文件存档到一个名为 &aposclasses.jar' 的存档文件中：
jar cvfm classes.jar mymanifest -C foo/ .

====================
jarsigner.exe

用法：jarsigner [options] jar-file alias
jarsigner -verify [options] jar-file

[-keystore <url>] keystore location

[-storepass <password>] password for keystore integrity

[-storetype <type>] keystore type

[-keypass <password>] password for private key (if different)

[-sigfile <file>] name of .SF/.DSA file

[-signedjar <file>] name of signed JAR file

[-verify] verify a signed JAR file

[-verbose] verbose output when signing/verifying

[-certs] display certificates when verbose and verifying

[-internalsf] include the .SF file inside the signature block

[-sectionsonly] don&apost compute hash of entire manifest

[-provider] name of cryptographic service provider&aposs master class file
...

====================
javadoc.exe

用法：javadoc [options] [packagenames] [sourcefiles] [classnames] [@files]
-overview <file> 读取 HTML 格式的概述文档
-public 仅显示 public 类和成员
-protected 显示 protected/public 类和成员（缺省）
-package 显示 package/protected/public 类和成员
-private 显示所有类和成员
-help 显示命令行选项
-doclet <class> 通过候选 doclet 生成输出
-docletpath 指定 doclet 类文件的查找位置
-sourcepath <pathlist> 指定源文件的查找位置
-classpath <pathlist> 指定用户类文件的查找位置
-exclude <pkglist> Specify a list of packages to exclude
-subpackages <subpkglist> Specify subpackages to recursively load
-breakiterator Compute 1st sentence with BreakIterator
-bootclasspath <pathlist> 覆盖自举类加载器所加载的类文件的位置
-source <release> Provide source compatibility with specified release
-extdirs <dirlist> 覆盖已安装的扩展的位置
-verbose 有关 Javadoc 所做工作的输出信息
-locale <name> 所用的 Locale，例如 en_US 或 en_US_WIN
-encoding <name> 源文件编码名称
-J<flag> 将 <flag> 直接传给运行时系统

由标准 doclet 提供：
-d <directory> 输出文件的目标目录
-use 创建类和包的用法页
-version 包含 @version 段
-author 包含 @author 段
-docfilessubdirs Recursively copy doc-file subdirectories
-splitindex 将索引分为每个字母对应一个文件
-windowtitle 文档的浏览器窗口标题
-doctitle <html-code> 包含包索引页（首页）的标题
-header <html-code> 包含每一页的页眉文本
-footer <html-code> 包含每一页的页脚文本
-bottom <html-code> 包含每一页的页底文本
-link <url> Create links to javadoc output at <url>
-linkoffline <url> <url2> Link to docs at <url> using package list at <url2>
-excludedocfilessubdir <name1>:.. Exclude any doc-files subdirectories with given name.
-group <name> <p1>: <p2>.. Group specified packages together in overview page
-nocomment Supress description and tags, generate only declarations.
-nodeprecated 不包含 @deprecated 信息
-noqualifier <name1>:<name2>:... Exclude the list of qualifiers from the output.
-nosince Do not include @since information
-nodeprecatedlist 不生成不鼓励使用的列表
-notree 不生成类层次
-noindex 不生成索引
-nohelp 不生成帮助链接
-nonavbar 不生成导航栏
-quiet Do not display status messages to screen
-serialwarn Generate warning about @serial tag
-tag <name>:<locations>: <header> Specify single argument custom tags
-taglet The fully qualified name of Taglet to register
-tagletpath The path to Taglets
-charset <charset> Charset for cross-platform viewing of generated documentation.
-helpfile <file> 包含帮助链接功能链接到目标的文件
-linksource Generate source in HTML
-stylesheetfile 改变所生成文档的样式的文件
-docencoding <name> 输出编码名称

====================
jdb.exe

用法：jdb <options> <class> <arguments>

where options include:
-help print out this message and exit
-sourcepath <directories by="" separated="">
directories in which to look for source files
-attach </directories></arguments></class></options> </name> </file></charset> </header> </locations></name></name2></name1></p2> </p1> </name></name1></url2></url></url2></url></url></url> </html-code> </html-code> </html-code> </html-code> </directory></flag></flag></name></name></dirlist></release></pathlist> </subpkglist></pkglist> </pathlist> </pathlist> </class></file></file></file></password> </type></password> </url></runtime></encoding></options> </options> </value></size></size></size></file></directories></directories></directories></classname></packagename> </classname></packagename> </classname></packagename> </classname></packagename> </value></name></directories>

attach to a running VM at the specified address using standard connector
-listen

wait for a running VM to connect at the specified address using standard connector
-listenany
wait for a running VM to connect at any available address using standard connector
-launch
launch VM immediately instead of waiting for &aposrun' command
-connect <connector-name>:<name1>=<value1>,...
connect to target VM using named connector with listed argument values
-dbgtrace [flags] print info for debugging jdb
-tclient run the application in the Hotspot(tm) Performance Engine (Client)
-tserver run the application in the Hotspot(tm) Performance Engine (Server)

options forwarded to debuggee process:
-v -verbose[:class|gc|jni]
turn on verbose mode
-D<name>=<value> set a system property
-classpath <directories by="" separated="">
list directories in which to look for classes
-X non-standard target VM option

<class> is the name of the class to begin debugging
<arguments> are the arguments passed to the main() method of <class>

For command help type &aposhelp' at jdb prompt

====================
javah.exe

用法：javah [options] <classes>

其中 [options] 包括：

-help 打印该帮助信息
-classpath 类的加载路径
-bootclasspath 自举类的加载路径
-d </classes></class></arguments></class></directories></value></name></value1></name1></connector-name>

输出目录
-o <file> 输出文件（仅能使用 -d 或 -o 之一）
-jni 生成 JNI 风格的头文件（缺省）
-old 生成 JDK1.0 风格的头文件
-stubs 生成 stubs 文件
-version 打印版本信息
-verbose 输出有关本命令所做工作的信息
-force 始终写输出文件

指定 <classes> 时必须使用全名（例如 java.lang.Object）。

====================
javap.exe

用法：javap <options> <classes>...

where options include:
-b Backward compatibility with javap in JDK 1.1
-c Disassemble the code
-classpath <pathlist> Specify where to find user class files
-extdirs <dirs> Override location of installed extensions
-help Print this usage message
-J<flag> Pass <flag> directly to the runtime system
-l Print line number and local variable tables
-public Show only public classes and members
-protected Show protected/public classes and members
-package Show package/protected/public classes
and members (default)
-private Show all classes and members
-s Print internal type signatures
-bootclasspath <pathlist> Override location of class files loaded
by the bootstrap class loader
-verbose Print stack size, number of locals and args for methods
If verifying, print reasons for failure

====================
javaw.exe

====================
HtmlConverter.exe

用法：HtmlConverter [-option1 value1 [-option2 value2 [...]]] [-simulate] [filespecs]

其中，选项包括：

-source: 获取源文件的路径。 缺省值： <userdir>
-dest: 写入已转换文件的路径。 缺省值： <userdir>
-backup: 写备份文件的路径。 缺省值： <dirname>_BAK
-f: 强制覆写备份文件。
-subdirs: 应处理子目录中的文件。
-template: 模板文件的路径。 如果不确定，请使用缺省值。
-log: 写日志的路径。 如果没有提供，则不会写入任何日志。
-progress: 转换时显示进度。 缺省值： true
-simulate: 在没有进行转换时显示特定于转换的信息。
-latest: 使用最新的 JRE 支持发行版 mimetype。
-gui: 显示转换程序的图形用户界面。

filespecs: 用空格分开的文件说明列表。 缺省值： "*.html *.htm" （需要引号）

====================
keytool.exe

keytool 用法：

-certreq [-v] [-alias <alias>] [-sigalg <sigalg>]
[-file <csr_file>] [-keypass <keypass>]
[-keystore <keystore>] [-storepass <storepass>]
[-storetype <storetype>] [-provider <provider_class_name>] ...

-delete [-v] -alias <alias>
[-keystore <keystore>] [-storepass <storepass>]
[-storetype <storetype>] [-provider <provider_class_name>] ...

-export [-v] [-rfc] [-alias <alias>] [-file <cert_file>]
[-keystore <keystore>] [-storepass <storepass>]
[-storetype <storetype>] [-provider <provider_class_name>] ...

-genkey [-v] [-alias <alias>] [-keyalg <keyalg>]
[-keysize <keysize>] [-sigalg <sigalg>]
[-dname <dname>] [-validity <valdays>]
[-keypass <keypass>] [-keystore <keystore>]
[-storepass <storepass>] [-storetype <storetype>]
[-provider <provider_class_name>] ...

-help

-identitydb [-v] [-file <idb_file>] [-keystore <keystore>]
[-storepass <storepass>] [-storetype <storetype>]

-import [-v] [-noprompt] [-trustcacerts] [-alias <alias>]
[-file <cert_file>] [-keypass <keypass>]
[-keystore <keystore>] [-storepass <storepass>]
[-storetype <storetype>] [-provider <provider_class_name>] ...

-keyclone [-v] [-alias <alias>] -dest <dest_alias>
[-keypass <keypass>] [-new <new_keypass>]
[-keystore <keystore>] [-storepass <storepass>]
[-storetype <storetype>] [-provider <provider_class_name>] ...

-keypasswd [-v] [-alias <alias>]
[-keypass <old_keypass>] [-new <new_keypass>]
[-keystore <keystore>] [-storepass <storepass>]
[-storetype <storetype>] [-provider <provider_class_name>] ...

-list [-v | -rfc] [-alias <alias>]
[-keystore <keystore>] [-storepass <storepass>]
[-storetype <storetype>] [-provider <provider_class_name>] ...

-printcert [-v] [-file <cert_file>]

-selfcert [-v] [-alias <alias>] [-sigalg <sigalg>]
[-dname <dname>] [-validity <valdays>]
[-keypass <keypass>] [-keystore <keystore>]
[-storepass <storepass>] [-storetype <storetype>]
[-provider <provider_class_name>] ...

-storepasswd [-v] [-new <new_storepass>]
[-keystore <keystore>] [-storepass <storepass>]
[-storetype <storetype>] [-provider <provider_class_name>] ...

====================
extcheck.exe

用法：extcheck [-verbose] <jar file="">

====================
idlj.exe

com.sun.tools.corba.se.idl.InvalidArgument: No IDL file was specified.

Compiler Usage:

java com.sun.tools.corba.se.idl.toJavaPortable.Compile [options] <idl file="">

where <idl file=""> is the name of a file containing IDL definitions, and
[options] is any combination of the options listed below. The options
are optional and may appear in any order; <idl file=""> is required and
must appear last.

Options:
-d <symbol> This is equivalent to the following line in an
IDL file: #define <symbol>
-emitAll Emit all types, including those found in #included files.
-f<side> Define what bindings to emit. <side> is one of client,
server, all, serverTIE, allTIE. serverTIE and allTIE
cause delegate model skeletons to be emitted. If this
flag is not used, -fclient is assumed.
-i <include path=""> By default, the current directory is scanned for
included files. This option adds another directory.
-keep If a file to be generated already exists, do not
overwrite it. By default it is overwritten.
-noWarn Suppress warnings.
-oldImplBase Generate skeletons compatible with old (pre-1.4) JDK ORBs.
-pkgPrefix <t> <prefix> When the type or module name <t> is encountered at
file scope, begin the Java package name for all files
generated for <t> with <prefix>.
-pkgTranslate <t> <pkg> When the type or module name <t> in encountered, replace
it with <pkg> in the generated java package. Note that
pkgPrefix changes are made first. <t> must match the
full package name exactly. Also, <t> must not be
org, org.omg, or any subpackage of org.omg.
-skeletonName </t></t></pkg> </t></pkg> </t></prefix> </t></t></prefix> </t></include></side></side></symbol></symbol></idl></idl></idl></jar></provider_class_name> </storetype></storepass></keystore></new_storepass></provider_class_name> </storetype></storepass></keystore></keypass></valdays></dname></sigalg></alias></cert_file></provider_class_name> </storetype></storepass></keystore></alias></provider_class_name> </storetype></storepass></keystore></new_keypass></old_keypass> </alias></provider_class_name> </storetype></storepass></keystore></new_keypass></keypass></dest_alias></alias></provider_class_name> </storetype></storepass></keystore></keypass></cert_file></alias></storetype></storepass></keystore></idb_file></provider_class_name> </storetype></storepass></keystore></keypass></valdays></dname></sigalg></keysize></keyalg></alias></provider_class_name> </storetype></storepass></keystore></cert_file></alias></provider_class_name> </storetype></storepass></keystore></alias></provider_class_name> </storetype></storepass></keystore></keypass></csr_file></sigalg></alias></dirname></userdir></userdir></pathlist> </flag></flag></dirs></pathlist> </classes></options> </classes></file> use for the output directory instead of
the current directory.
-tieName