public class Reader {
	
	private String result;

	public Reader() {
                ...
		// файл прочитался
		System.out.println(getResult());

	}

	public static void main(String[] args) {

		new Reader();
	}

	public String getResult() {
		return result;
	}

	public void setResult(String result) {
		this.result = result;
	}
}

public class HelloWorldAction extends ActionSupport {

    private String code;
    
    public String execute() throws Exception {
        code = new Reader().getResult();
        System.out.println("**********" + code);
        return SUCCESS;
    }
    ...

System.out.println(getResult());