String interpolation: Difference between revisions

Revision as of 11:21, 21 February 2022

Revision as of 11:24, 21 February 2022

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=== Java ===

{{Main article|Java (programming language)}}

{{as of|2022}}, Java does not have interpolated strings, and instead uses format functions, notably the <code>MessageFormat</code> class (Java version 1.1 and above) and the static method <code>String.format</code> (Java version 5 and above).

Lacking true interpolated strings, Java uses helper functions as a workaround.

In Java versions 5 and above, the static method <code>String.format</code> can be used for interpolation:

<syntaxhighlight lang="java">

int apples = 4;

int bananas = 3;

System.out.println(String.format("I have %s apples and %s bananas", apples, bananas));

System.out.println(String.format("I have %s fruit", apples + bananas));

</syntaxhighlight>

In Java version 1.1 and above, the <code>MessageFormat</code> class can format sets of objects using placeholders:

<syntaxhighlight lang="java">

Object[] testArgs = {Long.valueOf(3), "MyDisk"};

MessageFormat form = new MessageFormat(

"The disk \"{1}\" contains {0} file(s).");

System.out.println(form.format(testArgs));

</syntaxhighlight>

=== JavaScript ===