Java long to String

In this post, we will see how to convert long to String in java.

There are lot of ways to convert long to String.Let’s see each one by one.


Using Long.toString()

You can use Long class toString() method to convert long to String.

In case, Long can be null and you don’t want to have 4 characters null String, then you should use Objects.toString(i,null) to convert long to String.

Please note that java.util.Objects class is available from JDK 7.

Using String.valueOf()

You can use String’s valueOf method to convert long to String.


Using + operator

You can use + operator to convert long to String.


Using String.format method()

You can also use String’s format() method to convert Long to String.
Here is the simple example.


Using StringBuffer and StringBuilder

You can use StringBuffer and StringBuilder class to convert Long to String.


Using DecimalFormat

You can use DecimalFormat class to convert Long to String.

In case, you need to format String with ,, you can use below code.


Long to String with different Radix

We have seen all the examples with base 10. In case, you want to convert Long to String in different radix, you can use difference Long.toXXXString() method.

Binary

We can use Long’s toBinaryString() to convert Long to String in binary format.

Octal

We can use Long’s toOctalString() to convert Long to String in Octal format.

Hexadecimal

We can use Long’s toHexString() to convert Long to String in HexaDecimal format.

Java program for Long to String Conversion

Output:

Using Long’s toString(): 22
Using Object’s toString(): null
Using String’s valueOf(): 11
Using + operator: 12
Using String’s format(): 13
Using DecimalFormat: 132987654
Using DecimalFormat: 132,987,654
Using StringBuilder: 14
Binary: 1100
Octal: 14
Hex: c

That’s all about how to convert Long to String in java.

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