Xpath in for loop with using Java

I wonder that

---

for(int k=1; k<4; k++){
    String  elem1 = driver.findElement(By.xpath("/html/body/div[4]/div/div/div[2]/div/div/div/div[3]/div[2]/div[2]/div[2]/ul[1]/li[6]/div/ul/li/div/a[k]" + k)).getAttribute("innerHTML");
    //String  elem2 = driver.findElement(By.xpath("/html/body/div[4]/div/div/div[2]/div/div/div/div[3]/div[2]/div[2]/div[2]/ul[1]/li[6]/div/ul/li/div/a[2]")).getAttribute("innerHTML");
    //String  elem3 = driver.findElement(By.xpath("/html/body/div[4]/div/div/div[2]/div/div/div/div[3]/div[2]/div[2]/div[2]/ul[1]/li[6]/div/ul/li/div/a[3]")).getAttribute("innerHTML");



    System.out.println(elem1);
    //System.out.println(elem2);
    //System.out.println(elem3);

    Thread.sleep(3000);
    double value = Double.parseDouble(elem1);
    System.out.println(value);
    }

---

As you can see in "String elem1" line; i try to pass value k into xpath, but it doesnt work. How can i do that? I need to increase the value of k because as you can see in comments line it goes; 1-2-3-4....-78... Please help me, thank you all :)

via Chebli Mohamed