Type casting in selenium webdriver

    public By idReturn(String id){
        id = id.toLowerCase();
        if(id.startsWith("id~")) return By.id(id.replace("id~", ""));
        else if(id.startsWith("name~")) return By.name(id.replace("name~", ""));
        else if(id.startsWith("cssselector~")) return By.cssSelector(id.replace("cssselector~", ""));
        else if(id.startsWith("xpath~")) return By.xpath(id.replace("xpath~", ""));
       
        return By.xpath("Unable to find the element locater");
    }
   
    public boolean enterText(String id, String value){
        if(value.length() == 0) return false;
        driver.findElement(idReturn(id)).clear();
        driver.findElement(idReturn(id)).sendKeys(value);
        return true;
    }
    public void clickElement(String id){
        driver.findElement(idReturn(id)).click();
    }