javac

I am trying to compile (from the command line) a java package that imports another package of my own. I was following a tutorial online but it seems that I get an error when I try to compile the final java file (CallPackage.java). Here is the file structure: + test_directory (contains CallPackage.java) -> importpackage -> subpackage (contains HelloWorld.java) Here is CallPackage.java: /// CallPackage.java import importpackage.subpackage.*; class CallPackage{ public static void main(String[] args){ HelloWorld h2=new HelloWorld(); h2.show(); } } and here is HelloWorld.java: ///HelloWorld.java

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. Thomas Owens From what I can tell in the docs, you can't do it on the command-line. According to the javac documentation , -Xlint:none only disables warnings "not mandated by the Java Language Specification". It appears that warning you of the use of deprecated APIs is managed by the language spec. Your best option would be to fix the use of deprecated APIs. However, an option

When using the Java compiler ( javac ), we can specify two kinds of compatibility. One is using -source and the other is using -target . What is the difference between these two? For example, -source 1.5 and -target 1.6 ? Also, is there any case where we use a different source and target compatibility level? From the javac docs : -source Specifies the version of source code accepted. -target Generate class files that target a specified version of the VM. Class files will run on the specified target and on later versions, but not on earlier versions of the VM. In your example: -source 1.5 and

I am compiling multiple files in a directory (javac *.java) but I have a problem when I try to do this: I get compile errors saying that say javac cannot find a symbol of an object. I have multiple packages that contain java files that are needed to run the main program. But it seems that trying to compile these one by one won't work. It runs fine in my IDE but I'm interested in learning how it's done via Command Prompt. The main program is in the drivers folder. I have tried compiling the files in order of dependency but that didn't work out. Javac documentation provides all the necessary

NOTE: This appears to be a limit in the "javac" program. I have Java 6 code that needs to be built for a Java 5 JVM. My previous work with the javac ant target (both with the JDK compiler and with ecj) led me to believe that it would simply be a matter of setting source and target for javac. Hence this pom.xml fragment: <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>2.3.2</version> <configuration> <source>1.6</source> <target>1.5</target> </configuration> </plugin> which works as expected from within Eclipse 3.7 with Maven support.