AppletTalk.com Java discussions newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  1.4.1 String.getBytes still broken          AppletTalk.com Forum Index -> ibm.software.java.linux View previous topic :: View next topic   Author Message Geoff Soutter Guest Posted: Wed Aug 27, 2003 1:39 pm    Post subject: 1.4.1 String.getBytes still broken Hi, I just came across the String.getBytes() bug that was reported for 1.4.0 in this newsgroup a few months back, which it was said would be fixed in 1.4.1... I am using version: java version "1.4.1" Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1) Classic VM (build 1.4.1, J2RE 1.4.1 IBM build cxia32141-20030522 (JIT enabled: jitc)) And I have a testcase which looks something like so: try { string.getBytes("<bogus encoding>"); catch (UnsupportedEncodingException e) { // success } fail(); This works fine in Sun and IBM 1.3, but breaks in IBM 1.4. As earlier reported, it throws the new nio IllegalCharsetNameException. Are IBM intending to fix this bug? geoff Back to top Neil Masson Guest Posted: Wed Aug 27, 2003 2:08 pm    Post subject: Re: 1.4.1 String.getBytes still broken Geoff Soutter wrote: Quote: Hi, I just came across the String.getBytes() bug that was reported for 1.4.0 in this newsgroup a few months back, which it was said would be fixed in 1.4.1... I am using version: java version "1.4.1" Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1) Classic VM (build 1.4.1, J2RE 1.4.1 IBM build cxia32141-20030522 (JIT enabled: jitc)) And I have a testcase which looks something like so: try { string.getBytes("<bogus encoding>"); catch (UnsupportedEncodingException e) { // success } fail(); This works fine in Sun and IBM 1.3, but breaks in IBM 1.4. As earlier reported, it throws the new nio IllegalCharsetNameException. Are IBM intending to fix this bug? geoff I never said it would be fixed because I don't accept that it's a bug. There is a space in "bogus encoding" and therefore it is an illegal charset name. Neil Back to top Geoff Soutter Guest Posted: Thu Aug 28, 2003 9:24 am    Post subject: Re: 1.4.1 String.getBytes still broken Neil Masson wrote: [snip] Quote: I never said it would be fixed because I don't accept that it's a bug. There is a space in "bogus encoding" and therefore it is an illegal charset name. I agree it's an illegal charset name. No problem there. The problem is that the method throws a different exception to what it used to throw under the previous version of the VM. This causes a backwards compatibility problem which causes my code to fail unexpected, which I call a bug. Generally Java is supposed to be backwards compatible. Is IBM Java different in this respect? geoff Back to top Neil Masson Guest Posted: Fri Aug 29, 2003 2:55 pm    Post subject: Re: 1.4.1 String.getBytes still broken Geoff Soutter wrote: Quote: Neil Masson wrote: [snip] I never said it would be fixed because I don't accept that it's a bug. There is a space in "bogus encoding" and therefore it is an illegal charset name. I agree it's an illegal charset name. No problem there. The problem is that the method throws a different exception to what it used to throw under the previous version of the VM. This causes a backwards compatibility problem which causes my code to fail unexpected, which I call a bug. Generally Java is supposed to be backwards compatible. Is IBM Java different in this respect? geoff This is a moot point. Java is not supposed to be backwards compatible, it is supposed to meet the spec and pass a set of compliance tests. IBM's java is fully compliant. It seems to me that IllegalCharsetNameException "Unchecked exception thrown when a string that is not a legal charset name is used as such." is more precise than UnsupportedEncodingException. However I also see that throwing a different exception from a previous release can cause problems to application writers. Neil Back to top Geoff Soutter Guest Posted: Mon Sep 01, 2003 8:53 am    Post subject: Re: 1.4.1 String.getBytes still broken Neil Masson wrote: [snip] Quote: This is a moot point. Java is not supposed to be backwards compatible, it is supposed to meet the spec and pass a set of compliance tests. IBM's java is fully compliant. Hmm. Thats not what Sun seem to think - from http://java.sun.com/j2se/1.4.1/compatibility.html: "The Java 2 SDK versions 1.2, 1.3, and 1.4 are upwards source-compatible with JDK software versions 1.0 and 1.1, except for the incompatibilities listed below. This means that, except for the noted incompatibilities, source files written to use the language features and APIs defined for 1.0 and 1.1 can be compiled and run in the Java 2 SDK (all versions)." So, it appears that IBM JDK 1.4 does not live up to this statement, with regards to the contract for String.getBytes(). Quote: It seems to me that IllegalCharsetNameException "Unchecked exception thrown when a string that is not a legal charset name is used as such." is more precise than UnsupportedEncodingException. I agree. Quote: However I also see that throwing a different exception from a previous release can cause problems to application writers. Yes. These sort of issues are big problems if you want to run the same class on multiple VMs. And it is also different to the behaviour of the Sun VM, which is presumably the reference implementation. geoff Back to top Neil Masson Guest Posted: Mon Sep 29, 2003 11:26 am    Post subject: Re: 1.4.1 String.getBytes still broken Geoff, It seems to me that the IllegalCharsetNameException should not leak out from the nio package. It makes it impossible to write 1.3.1/1.4.1 neutral code as you point out. I have raised a defect to get this fixed (though I will have to persuade the fixer why it should be done). Neil Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         AppletTalk.com Forum Index -> ibm.software.java.linux All times are GMT Page 1 of 1   Jump to: Select a forum Java Newsgroups----------------Java DiscussionsWeb-based java games comp.lang.java 3D Graphics API's for Java Java: Support and criticism Java System Announcements comp.lang.java.api JavaBeans Java and CORBA Java and Databases comp.lang.java.developer Java GUI Toolkits Java Help comp.lang.java.javascript JVM, native methods and hardware comp.lang.java.misc Java Language Programming Security and Java comp.lang.java.setup Java Software Tools comp.lang.java.tech ibm.software.java.linux  Non-English Java Newsgroups----------------Java Language (German)Language Java (Français)Java (Italian)  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.