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- CHANGES
-
- Java(tm) Runtime Environment
- JRE(tm) 1.1.6
-
- -----------------------------------------------------------------------
- CONTENTS
- -----------------------------------------------------------------------
- This document describes the changes made between versions of the JRE.
- The contents of this document are as follows:
-
- - Changes from JRE 1.1.5 to JRE 1.1.6
- - Changes from JRE 1.1.4 to JRE 1.1.5
- - Changes from JRE 1.1.3 to JRE 1.1.4
- - Changes from JRE 1.1.2 to JRE 1.1.3
- - Changes from JRE 1.1.1 to JRE 1.1.2
-
- =======================================================================
- CHANGES FROM JRE 1.1.5 TO JRE 1.1.6
- =======================================================================
-
- Version 1.1.6 of the Java Runtime Environment and the Java Development
- Kit are maintenance releases. See the JDK CHANGES file at
- http://java.sun.com/products/jdk/1.1/CHANGES or in the JDK software
- download bundle for summaries of significant bugs that are fixed in
- this release of the Java platform.
-
- The file msvcrt.dll is now required to be included in redistributions
- of the Windows version of JRE 1.1.6. In previous versions, that file
- was listed in the JRE README as being optionally redistributable.
-
- The rmiregistry tool is included in version 1.1.6 of the JRE. The
- rmiregistry tool was not part of previous JRE releases.
-
-
- =======================================================================
- CHANGES FROM JRE 1.1.4 TO JRE 1.1.5
- =======================================================================
-
- JRE 1.1.5 and JDK 1.1.5 are maintenance releases. See the JDK CHANGES
- file at http://java.sun.com/products/jdk/1.1/CHANGES or in the JDK
- software download bundle for summaries of significant bugs that are
- fixed in this release of the Java platform.
-
-
- =======================================================================
- CHANGES FROM JRE 1.1.3 TO JRE 1.1.4
- =======================================================================
-
- JRE 1.1.4 and JDK 1.1.4 are maintenance releases. See the JDK CHANGES
- file at http://java.sun.com/products/jdk/1.1/CHANGES for summaries of
- significant bugs that are fixed in this release.
-
- In the JRE README file, the file content-types.properties has been
- moved from the list of OPTIONAL files to the list of REQUIRED files
- because it is required for java.net.
-
-
- =======================================================================
- CHANGES FROM JRE 1.1.2 TO JRE 1.1.3
- =======================================================================
-
- JRE 1.1.3 and JDK 1.1.3 are maintenance releases. The 1.1.3 release
- fixes a localization bug that prevented characters in text areas of
- windows from displaying properly in non-English language locales and
- non-Western European locales. This problem did not exist in the 1.1.1
- release.
-
- See the JDK CHANGES file at
- http://java.sun.com/products/jdk/1.1/CHANGES
- for further information about other changes and bug fixes in the 1.1.3
- release.
-
- =======================================================================
- CHANGES FROM JRE 1.1.1 TO JRE 1.1.2
- =======================================================================
-
- -----------------------------------------------------------------------
- End-User Installation Capability for the Win32 JRE
- -----------------------------------------------------------------------
-
- When the Win32 JRE 1.1.2 is downloaded, an InstallShield script is
- invoked that automates the installation of the JRE. The feature was not
- present in the 1.1.1 version of the JRE. With the InstallShield script,
- JRE 1.1.2 is suitable for installation by end-users. Because of this
- end-user installation capability of the Win 32 JRE 1.1.2, Java
- application developers have the option of not bundling the JRE with
- their software. Instead, they can direct end-users to download and
- install the JRE themselves.
-
- An installer is not available for Solaris versions of the JRE.
- Therefore it is recommended that Solaris application developers write
- their own installers and bundle the JRE and installer with their
- software.
-
-
- -----------------------------------------------------------------------
- Win32 JRE Available with or without Internationalization Files
- -----------------------------------------------------------------------
-
- JRE 1.1.2 for Win32 is available for download in two versions, one
- containing internationalization files and the other without. The
- version of the JRE with the internationalization files is more than
- twice the size of the version without the internationalization files.
- The smaller version is made available for those end users who have no
- need for internationalization capability. The files not contained in
- the smaller version of the Win32 JRE are those listed in the OPTIONAL
- FILES section of the JRE README file.
-
- Solaris versions of JRE 1.1.2 include internationalization files.
-
-
- -----------------------------------------------------------------------
- New jre Tool
- -----------------------------------------------------------------------
-
- This section provides a summary of the new jre tool for both Win32 and
- Solaris. The jre tool replaces the java tool in JRE 1.1.2. The jre tool
- is similar to the java tool, but offers only those options that are
- appropriate for a runtime-only system. It also provides the -cp and
- -nojit options that are not part of the java tool. More detailed
- documentation for the jre tool can be found on the JavaSoft web site
- at:
-
- For Solaris -
- http://java.sun.com/products/jdk/1.1/docs/tooldocs/solaris/jre.html
-
- For Windows -
- http://java.sun.com/products/jdk/1.1/docs/tooldocs/win32/jre.html
-
- Source code for the jre tool can be found in the Windows JDK 1.1.2
- directory tree in the jdk1.1.2\demo\jre\win32 folder. For the
- Solaris JDK 1.1.2, source code for the jre tool can be found in
- the jdk1.1.2/demo/jre/solaris directory.
-
- The jre tool invokes the Java Runtime interpreter for executing Java
- applications. The tool is available in the Win32, Solaris-Sparc, and
- Solaris x86 downloads of JRE 1.1.2. The syntax for the jre command is:
-
- jre [ options ] classname <args>
-
- The classname argument is the name of the class file to be
- executed. Any arguments to be passed to the class must be placed
- after the classname on the command line.
-
- An alternative version of the tool, jrew, is available for Win32. The
- jrew command is identical to jre, except that a console window is not
- invoked. The syntax of the jrew command is
-
- jrew [ options ] classname <args>
-
- On Windows platforms, the jre tool will ignore the CLASSPATH
- environment variable. For both Windows and Solaris platforms, the
- -cp option is recommended to specify an application's class path.
-
- Options for the jre and the jrew commands are as follows:
-
- -classpath path Specifies the path that jre uses to
- look up classes. Overrides the default
- classpath.
-
- -cp path Prepends the specified path to the default
- classpath that jre uses to look up classes.
-
- -help Print a usage message.
-
- -mx x Sets the maximum size of the memory allocation
- pool (the garbage collected heap) to x. The
- default is 16 megabytes of memory. x must be
- greater than or equal to 1000 bytes.
-
- -ms x Sets the startup size of the memory allocation
- pool (the garbage collected heap) to x. The
- default is 1 megabyte of memory. x must be
- greater than 1000 bytes.
-
- -noasyncgc Turns off asynchronous garbage collection. When
- activated, no garbage collection takes place
- unless it is explicitly called or the program
- runs out of memory.
-
- -noclassgc Turns off garbage collection of Java classes.
- By default, the Java interpreter reclaims space
- for unused Java classes during garbage collection.
-
- -nojit Specifies that any JIT compiler should be
- ignored. The default Java interpreter is invoked.
-
- -ss x The -ss option sets the maximum stack size that
- can be used by C code in a thread to x. The
- default units for x are bytes. The value of x
- must be greater than or equal to 1000 bytes.
-
- -oss x The -oss option sets the maximum stack size
- that can be used by Java code in a thread to x.
- The default units for x are bytes. The value of
- x must be greater than or equal to 1000 bytes.
-
- -v, -verbose Causes jre to print a message to stdout each
- time a class file is loaded.
-
- -verify Performs byte-code verification on the class
- file. Beware, however, that java -verify does
- not perform a full verification in all
- situations. Any code path that is not actually
- executed by the interpreter is not verified.
- Therefore, java -verify cannot be relied upon to
- certify class files unless all code paths in
- the class file are actually run.
-
- -verifyremote Runs the verifier on all code that is loaded
- into the system via a classloader. verifyremote
- is the default for the interpreter.
-
- -noverify Turns verification off.
-
- -verbosegc Causes the garbage collector to print out
- messages whenever it frees memory.
-
- -DpropName=value Defines a property value. propName is the name
- of the property whose value you want to change
- and value is the value to change it to. For
- example, the command
- java -Dawt.button.color=green ...
- sets the value of the property awt.button.color
- to "green".
-
-
- -----------------------------------------------------------------------
- Early-Access Release of the JRE for Solaris-x86
- -----------------------------------------------------------------------
-
- An early-access release of JRE 1.1.2 for Solaris x86 is available for
- download. An FCS version of the JRE for Solaris x86 will be made
- available in the future.
-
- BECAUSE THE JRE 1.1.2 FOR SOLARIS x86 IS AN EARLY-ACCESS RELEASE ONLY,
- IT SHOULD NOT BE USED FOR MISSION-CRITICAL APPLICATIONS.
-
-
- -----------------------------------------------------------------------
- JNI Invocation API Changes
- -----------------------------------------------------------------------
-
- To better support the JRE, the Invocation API is extended in JDK 1.1.2
- in a few minor ways. The changes do not break any existing code. The
- JNI Native Method Interface has not been changed.
-
- 1. The reserved0 field in the JDK1_1InitArgs structure has been
- renamed to "version." The JDK1_1InitArgs structure holds the
- initialization arguments to JNI_CreateJavaVM. Callers of
- JNI_CreateJavaVM must set the version field to 0x00010001.
- JNI_GetDefaultJavaVMInitArgs has been changed to return a "jint"
- indicating whether the requested version is supported.
-
- 2. The reserved1 field in the JDK1_1InitArgs structure has been
- renamed to "properties." This is a NULL-terminated array of
- strings. Each string has the format:
-
- name=value
-
- indicating a system property. (This facility corresponds to the -D
- option in the java command line.)
-
- 3. In JDK 1.1.1, the thread calling DestroyJavaVM must be the only
- user thread in the VM. JDK 1.1.2 has lifted this restriction. If
- DestroyJavaVM is called when there is more than one user thread,
- the VM waits until the current thread is the only user thread, and
- then tries to destroy itself.
-
-
- -----------------------------------------------------------------------
- Copyright ⌐ 1997, 1998 Sun Microsystems, Inc.
- 901 San Antonio Road, Palo Alto, CA 94303-4900 USA
- All rights reserved.
-