Java int to String - Integer.toString(i) vs new Integer(i).toString()

In Java, there are several ways to convert an int value to a String:

1. Using the Integer.toString() method:

int i = 42;
String s = Integer.toString(i);

2. Using the String.valueOf() method:

int i = 42;
String s = String.valueOf(i);

3. Using the new Integer(i).toString() method:

int i = 42;
String s = new Integer(i).toString();

4. Using string concatenation:

int i = 42;
String s = "" + i;

5. Using the String.format() method:

int i = 42;
String s = String.format("%d", i);

All of these methods will convert an int value to a String representation of that value. The choice of which method to use will depend on the specific requirements of your program.

Option 1 and 2 are the most common and recommended ways to convert an int to a String. Option 3 creates a new Integer object to hold the int value, which can be less efficient than the other options. Option 4 and 5 are also commonly used, but they may be less efficient or less readable than the other options, depending on the context.