Example usage for javax.tools StandardJavaFileManager getJavaFileForInput

Introduction

In this page you can find the example usage for javax.tools StandardJavaFileManager getJavaFileForInput.

Prototype

JavaFileObject getJavaFileForInput(Location location, String className, Kind kind) throws IOException;

Source Link

Document

Returns a JavaFileObject file object for input representing the specified class of the specified kind in the given package-oriented location.

Usage

From source file:me.dwtj.java.compiler.utils.CompilationTaskBuilder.java

private CompilationTask buildTask() throws IOException {
    // Configure the compiler itself and its file manager.
    JavaCompiler compiler = getSystemJavaCompiler();
    StandardJavaFileManager fileManager = compiler.getStandardFileManager(diagnostic, null, null);
    fileManagerConfig.config(fileManager);

    // Use the file manager and the class list to get the compilation units to be compiled.
    for (String c : classes) {
        JavaFileObject srcFile = fileManager.getJavaFileForInput(SOURCE_PATH, c, SOURCE);
        if (srcFile == null) {
            throw new IOException("No such class found on the source path: " + c);
        } else {/*from w  w w. ja  v a  2s . c o m*/
            compilationUnits.add(srcFile);
        }
    }

    // Configure the compilation task itself.
    if (compilationUnits.isEmpty()) {
        String msg = "CompilationTaskBuilder: No compilation units have been added.";
        throw new IllegalStateException(msg);
    }
    CompilationTask task = compiler.getTask(null, // TODO: Support user-defined writer.
            fileManager, diagnostic, options, // TODO: Support more user-defined options.
            null, // TODO: Support user-defined classes.
            compilationUnits);
    task.setProcessors(processors);

    return task;
}

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