Compiler.java

import java.io.InputStream;
import java.io.OutputStream;
import java.io.Writer;
import java.nio.charset.Charset;
import java.util.Locale;
import java.util.Set;

import javax.lang.model.SourceVersion;
import javax.tools.DiagnosticListener;
import javax.tools.JavaCompiler;
import javax.tools.JavaFileManager;
import javax.tools.JavaFileObject;
import javax.tools.StandardJavaFileManager;
import javax.tools.ToolProvider;

public class Compiler implements JavaCompiler {
    private final JavaCompiler inner = ToolProvider.getSystemJavaCompiler();

    @Override
    public CompilationTask getTask(
        Writer out,
        JavaFileManager fileManager,
        DiagnosticListener<? super JavaFileObject> diagnosticListener,
        Iterable<String> options,
        Iterable<String> classes,
        Iterable<? extends JavaFileObject> compilationUnits) {
        return inner.getTask(
            out,
            fileManager,
            diagnosticListener,
            options,
            classes,
            compilationUnits);
    }

    @Override
    public StandardJavaFileManager getStandardFileManager(
        DiagnosticListener<? super JavaFileObject> diagnosticListener,
        Locale locale,
        Charset charset) {
        return inner.getStandardFileManager(diagnosticListener, locale, charset);
    }

    @Override
    public int isSupportedOption(String option) {
        return inner.isSupportedOption(option);
    }

    @Override
    public int run(
        InputStream in, OutputStream out, OutputStream err, String... arguments) {
        return inner.run(in, out, err, arguments);
    }

    @Override
    public Set<SourceVersion> getSourceVersions() {
        return inner.getSourceVersions();
    }
}