The function returns a positive value if the first string is greater than the second one.The function returns a negative value if the first string is less than the second string.The CompareTo() function returns zero if both strings are equal.We can compare the strings using CompareTo() method. This process continues on each iteration of for loop and we will get the fully sorted array after the final iteration.Thus the 2nd largest element will be placed in the 2nd last position of the array. Loop will avoid the last index because it contains the sorted element. In the 2nd iteration, the comparison starts from the 1st element to the 2nd last position of the array.After 1st iteration of the for loop, 1st sorted element ie., the Largest element of the array will be placed at the last index.In bubble sort, the first element will be compared with the rest of the elements, and swapping occurs when a smaller element is obtained. Swap the strings if they are not in sorted order.įor a better understanding of the program, we recommend you to learn the basic topics of Java programming listed belowĪ bubble sort algorithm will sort the elements of an array. Then by using a nested for loop compare the strings with the adjacent strings. Here first we declare a string array to hold the strings.

Bubble sort is also used to sort integer arrays, we have a program to perform bubble sort on numbers in our Java program collection, you may check that also. Here we are explaining how to write a java program to perform bubble sort on a string.

Java program for bubble sort