Integer.toString(int i) vs String.valueOf(int i) in Java

by

In String type we have several method valueOf

static String   valueOf(boolean b) 
static String   valueOf(char c) 
static String   valueOf(char[] data) 
static String   valueOf(char[] data, int offset, int count) 
static String   valueOf(double d) 
static String   valueOf(float f) 
static String   valueOf(int i) 
static String   valueOf(long l) 
static String   valueOf(Object obj)

As we can see those method are capable to resolve all kind of numbers

every implementation of specific method like you have presented: So for integers we have

Integer.toString(int i)

for double

Double.toString(double d)

and so on

In my opinion this is not some historical thing, but it is more useful for a developer to use the method valueOf from the String class than from the proper type, as it leads to fewer changes for us to make when we want to change the type that we are operating on.

Sample 1:

public String doStuff(int num) {

  // Do something with num...

  return String.valueOf(num);

 }

Sample2:

public String doStuff(int num) {
  
 // Do something with num...
 
 return Integer.toString(num);

 }

As we see in sample 2 we have to do two changes, in contrary to sample one.

In my conclusion, using the valueOf method from String class is more flexible and that’s why it is available there.

More Related Contents:

  1. How do I convert a String to an int in Java?
  2. How do I convert from int to String?
  3. Convert String to double in Java
  4. Convert float to String and String to float in Java
  5. How to convert a char to a String?
  6. How do I convert a String to an InputStream in Java?
  7. Converting Integer to String with comma for thousands
  8. Integer.valueOf() vs. Integer.parseInt() [duplicate]
  9. Converting a string to an integer on Android
  10. Converting characters to integers in Java
  11. Converting List to List
  12. Extract Integer Part in String
  13. Why cannot cast Integer to String in java?
  14. Converting String Array to an Integer Array
  15. Simple way to repeat a string
  16. Difference between string object and string literal [duplicate]
  17. How to convert Strings to and from UTF8 byte arrays in Java
  18. Left padding a String with Zeros [duplicate]
  19. Reversing a String with Recursion in Java
  20. How can I pass an Integer class correctly by reference?
  21. Parsing a Hexadecimal String to an Integer throws a NumberFormatException?
  22. String array initialization in Java [duplicate]
  23. Printing reverse of any String without using any predefined function?
  24. Check if string ends with certain pattern
  25. How do format a phone number as a String in Java?
  26. Converting from byte to int in Java
  27. Verify if String is hexadecimal
  28. Is there a memory-efficient replacement of java.lang.String?
  29. What is the most efficient way to convert an int to a String?
  30. Java: Checking equality of arrays (order doesn’t matter)

Leave a Comment