ICompiler (commons-compiler 3.1.0 API)

All Known Implementing Classes:

AbstractCompiler
```
public interface ICompiler
```
A simplified substitute for the javac tool.

Field Summary

Fields
Modifier and Type	Field and Description
`static ResourceCreator`	`CREATE_NEXT_TO_SOURCE_FILE` Special value for `setClassFileCreator(ResourceCreator)`: Indicates that .class resources are to be created in the directory of the .java resource from which they are generated.
`static ResourceFinder`	`FIND_NEXT_TO_SOURCE_FILE` Special value for `setClassFileFinder(ResourceFinder)`.
`static File`	`NO_DESTINATION_DIRECTORY` Special value for `setDestinationDirectory(File, boolean)`'s first parameter: Indicates that .class files are to be created in the directory of the .java file from which they are generated.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`boolean`	`compile(File[] sourceFiles)` Reads a set of Java compilation units (a.k.a.
`void`	`compile(Resource[] sourceResources)` See `compile(File[])`.
`void`	`setBootClassPath(File[] directoriesAndArchives)` Equivalent of `--boot-class-path`.
`void`	`setCharacterEncoding(String characterEncoding)` Equivalent with `setEncoding(Charset.forName(characterEncoding))`.
`void`	`setClassFileCreator(ResourceCreator classFileCreator)`
`void`	`setClassFileFinder(ResourceFinder classFileFinder)` This `ResourceFinder` is used to check whether a .class resource already exists and is younger than the .java resource from which it was generated.
`void`	`setClassFileFinder(ResourceFinder destination, boolean rebuild)` Equivalent with {@code setClassFileFinder(rebuild ?
`void`	`setClassPath(File[] directoriesAndArchives)` Equivalent of --class-path.
`void`	`setCompileErrorHandler(ErrorHandler errorHandler)` By default, `CompileException`s are thrown on compile errors, but an application my install its own `ErrorHandler`.
`void`	`setDebugLines(boolean value)` Equivalent of `-g:lines`.
`void`	`setDebugSource(boolean value)` Equivalent of `-g:source`.
`void`	`setDebugVars(boolean value)` Equivalent of `-g:vars`.
`void`	`setDestinationDirectory(File destinationDirectory, boolean rebuild)` Equivalent of -d and `-rebuild`.
`void`	`setEncoding(Charset encoding)` Equivalent of -encoding.
`void`	`setExtensionDirectories(File[] directories)` Equivalent of `-extdirs`.
`void`	`setSourceFinder(ResourceFinder sourceFinder)` Finds more .java resources that need to be compiled, i.e. implements the "source path".
`void`	`setSourcePath(File[] directoriesAndArchives)` Equivalent of `--source-path`.
`void`	`setVerbose(boolean verbose)` Equivalent of `-verbose`.
`void`	`setWarningHandler(WarningHandler warningHandler)` By default, warnings are discarded, but an application my install a custom `WarningHandler`.

- Field Detail
  - NO_DESTINATION_DIRECTORY
```
@Nullable
static final File NO_DESTINATION_DIRECTORY
```
    Special value for setDestinationDirectory(File, boolean)'s first parameter: Indicates that .class files are to be created in the directory of the .java file from which they are generated.
  - FIND_NEXT_TO_SOURCE_FILE
```
static final ResourceFinder FIND_NEXT_TO_SOURCE_FILE
```
    Special value for setClassFileFinder(ResourceFinder).
    
    See Also:
    
    setClassFileFinder(ResourceFinder)
  - CREATE_NEXT_TO_SOURCE_FILE
```
static final ResourceCreator CREATE_NEXT_TO_SOURCE_FILE
```
    Special value for setClassFileCreator(ResourceCreator): Indicates that .class resources are to be created in the directory of the .java resource from which they are generated.
- Method Detail
  - setEncoding
```
void setEncoding(Charset encoding)
```
    Equivalent of -encoding.
  - setCharacterEncoding
```
void setCharacterEncoding(@Nullable
                          String characterEncoding)
```
    Equivalent with setEncoding(Charset.forName(characterEncoding)).
  - setDebugLines
```
void setDebugLines(boolean value)
```
    Equivalent of -g:lines.
  - setDebugVars
```
void setDebugVars(boolean value)
```
    Equivalent of -g:vars.
  - setDebugSource
```
void setDebugSource(boolean value)
```
    Equivalent of -g:source.
  - setSourceFinder
```
void setSourceFinder(ResourceFinder sourceFinder)
```
    Finds more .java resources that need to be compiled, i.e. implements the "source path".
  - setSourcePath
```
void setSourcePath(File[] directoriesAndArchives)
```
    Equivalent of --source-path.
    Equivalent with setSourceFinder(new PathResourceFinder(directoriesAndArchives)).
  - setBootClassPath
```
void setBootClassPath(File[] directoriesAndArchives)
```
    Equivalent of --boot-class-path.
  - setExtensionDirectories
```
void setExtensionDirectories(File[] directories)
```
    Equivalent of -extdirs.
  - setClassPath
```
void setClassPath(File[] directoriesAndArchives)
```
    Equivalent of --class-path.
  - setDestinationDirectory
```
void setDestinationDirectory(@Nullable
                             File destinationDirectory,
                             boolean rebuild)
```
    Equivalent of -d and -rebuild.
    Overrides any previously configured class file finder and class file creator.
    
    Parameters:
    
    destinationDirectory - NO_DESTINATION_DIRECTORY means "create .class resources in the directory of the .java resource from which they are generated"
    
    See Also:
    
    NO_DESTINATION_DIRECTORY, setClassFileFinder(ResourceFinder), setClassFileCreator(ResourceCreator)
  - setClassFileFinder
```
void setClassFileFinder(ResourceFinder destination,
                        boolean rebuild)
```
    Equivalent with setClassFileFinder(rebuild ? ResourceFinder.EMPTY_RESOURCE_FINDER : destination).
  - setClassFileFinder
```
void setClassFileFinder(ResourceFinder classFileFinder)
```
    This ResourceFinder is used to check whether a .class resource already exists and is younger than the .java resource from which it was generated.
    If it is impossible to check whether an already-compiled class file exists, or if you want to enforce recompilation, pass ResourceFinder.EMPTY_RESOURCE_FINDER as the classFileFinder.
    
    The default is, as for JAVAC, FIND_NEXT_TO_SOURCE_FILE.
    
    Parameters:
    
    classFileFinder - Special value FIND_NEXT_TO_SOURCE_FILE means ".class file is next to its source file, not in the destination directory"
    
    See Also:
    
    FIND_NEXT_TO_SOURCE_FILE
  - setClassFileCreator
```
void setClassFileCreator(ResourceCreator classFileCreator)
```
  - setVerbose
```
void setVerbose(boolean verbose)
```
    Equivalent of -verbose.
  - compile
```
boolean compile(File[] sourceFiles)
         throws CompileException,
                IOException
```
    Reads a set of Java compilation units (a.k.a. "source files") from the file system, compiles them into a set of "class files" and stores these in the file system. Additional source files are parsed and compiled on demand through the "source path" set of directories.
    For example, if the source path comprises the directories "A/B" and "../C", then the source file for class "com.acme.Main" is searched in
    
    A/B/com/acme/Main.java
    ../C/com/acme/Main.java
    
    Notice that it does make a difference whether you pass multiple source files to compile(File[]) or if you invoke compile(File[]) multiply: In the former case, the source files may contain arbitrary references among each other (even circular ones). In the latter case, only the source files on the source path may contain circular references, not the sourceFiles.
    
    This method must be called exactly once after object construction.
    
    Compile errors are reported as described at setCompileErrorHandler(ErrorHandler).
    
    Parameters:
    
    sourceFiles - Contain the compilation units to compile
    
    Returns:
    
    true for backwards compatibility (return value can safely be ignored)
    
    Throws:
    
    CompileException - Fatal compilation error, or the CompileException thrown be the installed compile error handler
    
    IOException - Occurred when reading from the sourceFiles
  - compile
```
void compile(Resource[] sourceResources)
      throws CompileException,
             IOException
```
    See compile(File[]).
    
    Parameters:
    
    sourceResources - Contain the compilation units to compile
    
    Throws:
    
    CompileException
    
    IOException
  - setCompileErrorHandler
```
void setCompileErrorHandler(@Nullable
                            ErrorHandler errorHandler)
```
    By default, CompileExceptions are thrown on compile errors, but an application my install its own ErrorHandler.
    Be aware that a single problem during compilation often causes a bunch of compile errors, so a good ErrorHandler counts errors and throws a CompileException when a limit is reached.
    
    If the given ErrorHandler throws CompileExceptions, then the compilation is terminated and the exception is propagated.
    
    If the given ErrorHandler does not throw CompileExceptions, then the compiler may or may not continue compilation, but must eventually throw a CompileException.
    
    In other words: The ErrorHandler may throw a CompileException or not, but the compiler must definitely throw a CompileException if one or more compile errors have occurred.
    
    Parameters:
    
    errorHandler - null to restore the default behavior (throwing a CompileException
  - setWarningHandler
```
void setWarningHandler(WarningHandler warningHandler)
```
    By default, warnings are discarded, but an application my install a custom WarningHandler.
    
    Parameters:
    
    warningHandler - null to indicate that no warnings be issued

Interface ICompiler

Field Summary

Method Summary

Field Detail

NO_DESTINATION_DIRECTORY

FIND_NEXT_TO_SOURCE_FILE

CREATE_NEXT_TO_SOURCE_FILE

Method Detail

setEncoding

setCharacterEncoding

setDebugLines

setDebugVars

setDebugSource

setSourceFinder

setSourcePath

setBootClassPath

setExtensionDirectories

setClassPath

setDestinationDirectory

setClassFileFinder

setClassFileFinder

setClassFileCreator

setVerbose

compile

compile

setCompileErrorHandler

setWarningHandler