problem about java-5-Collection of common programming errors
notfed
java java-6 java-5
Using a Java 1.5 compiler, when I try to compile a java class that depends on a class that was compiled with Java 1.6, I get this error:in/javac Java15.java Java15.java:5: cannot access Java16 bad class file: ./Java16.class class file has wrong version 50.0, should be 49.0 Please remove or make sure it appears in the correct subdirectory of the classpath.String java16result = Java16.test();^ 1 errorThe reverse works (Using a Java 1.6 compiler, I can link with a Java 1.5 class.)Is there any sort
sblundy
java generics gwt gxt java-5
I’m looking at some GXT code for GWT and I ran across this use of Generics that I can’t find another example of in the Java tutorials. The class name is com.extjs.gxt.ui.client.data.BaseModelData if you want to look at all of the code. Here are the important parts:private RpcMap map;public <X> X get(String property) {if (allowNestedValues && NestedModelUtil.isNestedProperty(property)) {return (X)NestedModelUtil.getNestedValue(this, property);}return map == null ? null : (X) map.ge
TheLQ
java java-7 java-5
I’ve recently moved to Java 7 in one of my projects. I claim that it can run on Java 1.5 simply because there’s nothing I depend on that is in Java 6 or 7. However when compiling today I noticed this:bootstrap class path not set in conjunction with -source 1.5Google has found little information on this warning. Does this mean that you can’t compile to Java 1.5 from Java 1.7?
Reddy
java java-ee java-6 java-5
Just out of curiosity. Can we compile & run a java file from another java program? If so, can you send a reference to that knowledge source?
jWeaver
console java-util-scanner bufferedreader java-6 java-5
I was reading about Console class, and in the very first line, it was written New to Java 6 and when we are running Java SE 6 from command line, then we are typically using console class objectSo, which means we are implicitly using console class through the command line ??Then, start searching about the console class, i found Input from console class in java and Console link. I conclude some pointsConsole class are only usable outside the IDE using System.console().readLine();Console class read
Michael Petrotta
generics java-5
I get confused when I come across a generic method of this sort.public static <T> T addAndReturn(T element, Collection<T> collection){collection.add(element);return element; }I cannot understand why <T> is required in this method.Also, what is the difference between generic methods and the methods that use generics syntax?
Frank Bruch
java jvm backwards-compatibility java-6 java-5
Please consider the following scenario: A Java Framework and a bunch of application-plugins are deployed as a Java SE Client Application. The Client Runtime is Java SE 6, whereas the framework as well as the application-plugins is compiled with Java SE 5.Now the framework is recompiled with Java SE 6, the application-plugins remain unchanged (compiled with Java SE 5). Assuming the framework “interface” (classes/interfaces directly used by the application-plugins) remains compilable with Java SE
22 revs, 3 users 98%MRalwasser
java upgrade java-6 java-5
I’d like to upgrade from Java 5 to Java 6. We all know about the technical advantages and benefits, but:I have the problem that a major client refuses to upgrade from java 5 to java 6 because of “the risks” and “no/too few benefits for us” (banking sector).What can be answered to a non-technical decider at the client what benefits he’ll get from an upgrade – or otherwise which problems/consequences may arise if he’ll stay with java 5?It’s not a “fire and forget”-product, it’s activly extended wi
bluish
java programming-languages java-5 java1.4
I’m about to jump into Java development again after a number of years. The language revision I worked with was 1.4.2. I know there have been significant changes to the language since then, and I’m looking for a site or a book that covers these in some detail. At the very least, I’m looking for a resource that indicates which language features were added in which revision, so I can at a glance skip the sections I’m already familiar with. Any suggestions ?
newbieguy
aix java-5
I have a problem with Java 1.5.0 for AIX. The error happens just when I log on with specific user on AIX (myuser). When I log on with other user java works ok.The error come up even when I executed just “java -version” or simply “java” (of course, without quoting). I’ve tried executing it with the full path: /usr/java5/jre/bin/java but still fails.There was installed the version 1.4 of java on system too. So the $PATH variable for the user contained /usr/java14/jre/bin, but I removed that value,
CodingMonkey
ssl apache-httpclient-4.x websphere-6.1 java-5 jks
I’m having this big problem and I can’t find any answer on google, so I try to write here.I’m developing a web service client. To connect to the web service, I have to create an ssl channel with client authentication and use a proxy (the call must be done from a whitelisted IP). To do this, I’m using the HttpClient 4.2.3 library with Java 1.5 (compatibility mode with 1.4), under WebSphere 6.1 environment.Being work-related, I’m deleting all references to the actual web service I’m calling so you
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