CODE EXAMPLE FOR JAVA

javaparser

public static void main(String[] args) throws Exception {
    // creates an input stream for the file to be parsed
    FileInputStream in = new FileInputStream("test.java");

    CompilationUnit cu;
    try {
        // parse the file
        cu = JavaParser.parse(in);
    } finally {
        in.close();
    }

    // prints the resulting compilation unit to default system output
    System.out.println(cu.toString());
}