Methods for Conversion from long to String in Java

The valueOf() method converts data from its internal form into human-readable form. It is a static method that is overloaded within a string for all of Java’s built-in types so that each type can be converted properly into a string.

String str = String.valueOf(varLong);

Object class contains toString() method. We can use toString() method to get string representation of an object. Whenever we try to print the Object reference then internally toString() method is invoked. If we did not define toString() method in your class then Object class toString() method is invoked otherwise our implemented/Overridden toString() method will be called.

String str = Long.toString(varLong);

This constructor is not valid in Java 9.

String str = new Long(varLong).toString();

The java string format() method returns a formatted string using the given locale, specified format string and arguments.

String str = String.format(“%d”, varLong);

StringBuffer is a peer class of String that provides much of the functionality of strings. The string represents fixed-length, immutable character sequences while StringBuffer represents growable and writable character sequences.

String str = new StringBuilder().append(varLong).toString();