javac

Eclipse+Maven compile problem

Hello, currently, I am developing web-apps using Eclipse. The build is done using Maven. The problem is that during compile time Eclipse is showing a lot of errors since there are a lot of missing jars. The final result is OK since the Maven is responsible for fetching these jars. How can make the eclipse not fail the compilation? I kn...

Out of memory error at compile time Java 6.0

I know how to use -Xmx -Xms at runtime, is there a way to ask the compiler to allocate more ram. I have 2 gigs on my pc. I don't use an IDE just textpad. I am trying to create a BigInteger with 10,000,000 digits and do operations on it. I tried creating a StringBuffer and ensureCapacity(10000000) and it wont compile. Is there a clas...

Setup Java 6 annotation processing configuration for eclipse compiler with maven

What's the best way to setup the eclipse project compiler configuration for Java 6 annotation processors? My solution is to setup the org.eclipse.jdt.apt.core.prefs and factorypath files manually. This is a bit cumbersome: Reference the processor jar in the factorypath file Configure the eclipse annotation processor output directory (...

Setting the target version of Java in ant javac

I need to compile a jar file using ant (1.7.0) to run under a specific version of Java (1.5). I currently have Java 1.6 on my machine. I have tried setting: <target name="compile"> <javac compiler="javac1.5" target="1.5" srcdir=.../> </target> I have also removed <property name="build.compiler" value="modern"/> and there is no p...

java -- compiling with a .Jar file -- help?

Hey, I'm trying to compile my class along with a provided .jar file which contains classes that my class will use. This is what I've been trying: javac -classpath .:WordSearch.jar WordSearchSolver.java And this is the response: WordSearchSolver.java:16: cannot find symbol symbol : class PuzzleWord location: class WordSearchSolver ...

javac for MyEclipse not found???

I am a newbie on MyEclipse id. On my system, I have installed sun jre(not jdk) and MyEclipse. I have searched for javac.exe in installed files of MyEclipse in Program Files (windows platform), but there also I got no results found for javac.exe I have no clue, that which tool MyEclipse is using to compile .java files. 1 more question...

Disabling compile-time dependency checking when compiling Java classes

Consider the following two Java classes: a.) class Test { void foo(Object foobar) { } } b.) class Test { void foo(pkg.not.in.classpath.FooBar foobar) { } } Furthermore, assume that pkg.not.in.classpath.FooBar is not found in the classpath. The first class will compile fine using the standard javac. However, the second class won't c...

How can I suppress javac warnings about deprecated api?

When I compile, javac outputs: Note: Some input files use or override a deprecated API. Note: Recompile with -Xlint:deprecation for details.` I wish to suppress this warning. Trying -Xlint:none does not seem to help ...

Where is the source code for the java compiler?

I'm looking for the source code of Sun's standard java compiler, javac. jdk1.6.0_07 has a few classes that are related, but they are interfaces (java.lang.Compiler and javax.tools.JavaCompiler). There's also some packages under com.sun.mirror.* and com.sun.source.*, which seem to be interfaces for representing the java abstract syntax ...

What is the problem when javac compiler creates a jarfile with lowercase class file names?

When I run the javac compiler it compiles code and creates a JAR file, but the names of the class files inside the JAR are all in lower case. However, the classes within the source files have both lower and upper case names. The result of this is that I cannot compile other projects which are dependent on this JAR. ...

How do I find javac.exe programmatically?

I'm calling javac from C# code. Originally I found its location only as follows: protected static string JavaHome { get { return Environment.GetEnvironmentVariable("JAVA_HOME"); } } However, I just installed the JDK on a new computer and found that it didn't automatically set the JAVA_HOME environment variable. Req...

Failure to import javax.servlet

I know this is a common error, but bear with me. I've pursued the CLASSPATH problem and I don't think that is the issue. I'm getting an error like this. ./src/process.java:2: package javax.servlet does not exist import javax.servlet.*; I installed Tomcat and the Java SDK, and I know that Tomcat is supposed to supply the servlet API. ...

How to compile java code?

Hi, I have a bunch of java files and I am running the following code in an attempt to compile them. "\Program Files\Java\jdk1.6.0_16\bin\javac" Main.java And I am being shown this error message Main.java:3: package colourtiler.patternsdoes not exist import colourtiler.patterns.draw; The code it isreferring to is located in the fo...

javac not working in windows command prompt

I'm trying to use javac with the windows command prompt, but its not working. After adding the directory "C:\Program Files\Java\jdk1.6.0_16\bin\" to the end of the environment path variable, the java command works fine, but using javac gives me the error: 'javac' is not recognized as an internal or external command, operable program or...

Find the gender from a name

Hi guys, I recently confronted with a weird yet interesting question. The questions is as follows: Need to write a program which can give the gender as output based on the name. Example: INPUT --> John Michael Britney OUTPUT--> male male female So this ...

Will JRE 1.4 support classes compiled with Java 1.5 & 1.6?

Will code compiled using 1.5 and 1.6 run on a 1.4 JRE? We weren't sure which Java versions the 1.4 JRE supports. We know that if the code in question implements 1.5 or 1.6 supported features then it definitely won't compile... and that there are some risks with "backwards compiling" but wasn't sure if the 1.4 JRE would refuse to even ...

Should Java programs compiled with debugging information not be used in a production system?

Is there any reason I should avoid compiling in debugging information with Javac in my Java classes for use in a production server? Are there any speed or security concerns I should be aware of? Please note that I am referring to debugging information like line numbers in stack traces, not the debug level of loggers. Related Questio...

How to intentionally cause a custom java compiler warning message?

I'm about to commit an ugly temporary hack in order to work around a blocking issue while we wait for an external resource to be fixed. Aside from marking it with a big scary comment and a bunch of FIXMEs, I'd love to have the compiler throw an obvious warning message as a reminder so we don't forget to take this out. For example, some...

How do I find out what jar files are actually used when compiling a java project.

I'm currently passing a very large classpath to javac to compile a java project. I know that a number of those jar files aren't needed. Is there a simple way of finding out which files aren't needed? ...

Comfortable Javadoc API in the browser (web application)

I'm looking for a web application (either an existing web site or a site which I can generate and set it up for myself, or a greasemonkey script), which lets me browse http://java.sun.com/javase/6/docs/api/ (or any earlier version I specify) in a more convenient way, i.e. where I can search for a class name. http://www.jdocs.com/ doesn'...