public class JavaParser {

    private int noOfLines;

    public void parse(String javaCode){
        String[] lines = javaCode.split("[rn]+");
        for(String line : lines)
            System.out.println(line);
    }



     public static void main(){
            JavaParser a = new JavaParser();
            a.parse("java code;");
     }
}

FileInputStream inputStream = new FileInputStream("foo.java");
try {
    String everything = IOUtils.toString(inputStream);
} finally {
    inputStream.close();
}