Replacing many things using replace() in one line

Question

I wonder if there is a way to use replace() with multiple replacement in one line in java. for example:

String precio_gold = "59,99$";
precio_gold = precio_gold.replace(",", ".");
precio_gold = precio_gold.replace("$", "");

And also if I there is a way to introduce more posibilites in the first "argument" of replace method, for example receive a price and depending if it has $ or € replace with "" (nothing):

precio_gold = precio_gold.replace("$" AND "€", ""); //This is wrong but I put just to see what I want to say.

Use replaceAll instead of replace, which takes a regular expression as its first argument (instead of a literal string to replace): precio_gold.replaceAll("\\$|€", ""); — Jesper
– Jesper, Commented Jan 12, 2017 at 10:41
Better regex : [$€] ($ has no special meaning in a character class so it does not need to be escaped) — Aaron
– Aaron, Commented Jan 12, 2017 at 10:44
We're talking regex, but you should instead be using a localized NumberFormat. See this SO question — Aaron
– Aaron, Commented Jan 12, 2017 at 10:52
Rather than always replacing "," with ".", I suggest you output the decimal point using a Locale-dependent formatter instead. If you hard-code it to ".", sooner or later some European will complain that your output is wrong. — Klitos Kyriacou
– Klitos Kyriacou, Commented Jan 12, 2017 at 10:53

Jaims · Accepted Answer · 2017-01-12 10:46:29Z

4

For your first problem, doing multiple replaces on one line, you could just chain the method.

System.out.println(precio_gold.replace(",", ".").replace("$", ""));

For your second problem, you could use replaceAll with a regex.

System.out.println(precio_gold.replaceAll("\\$|€", ""));

Note that $ is escaped with \\ since it's a special character in a regular expression.

answered Jan 12, 2017 at 10:46

Jaims

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1 Comment

JetLagFox Over a year ago

Worked for both cases! Thanks to all the replies!

AR1 · Accepted Answer · 2017-01-12 10:53:02Z

2

If you're allowed to use Apache Commons then this is what you're looking for:

StringUtils.replaceEach(String text, String[] searchList, String[] replacementList)

you can find more examples in the documentation here.

answered Jan 12, 2017 at 10:53

AR1

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Comments

SeniorJD · Accepted Answer · 2017-01-12 10:45:51Z

1

This one should work for you

precio_gold = precio_gold.replaceAll("[$€]", "");

answered Jan 12, 2017 at 10:45

SeniorJD

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SamCle88 · Accepted Answer · 2017-01-12 10:57:46Z

1

You can always try with

precio_gold = precio_gold.replace(",", ".").replaceAll("\\$|€", "");

or even

precio_gold = "59,99$".replace(",", ".").replaceAll("\\$|€", "");

edited Jan 12, 2017 at 10:57

answered Jan 12, 2017 at 10:45

SamCle88

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Comments

Sourav Purakayastha · Accepted Answer · 2017-01-12 10:50:05Z

0

You wanted to know if there are more possiblities in the first argument. I say, you can use Ternary operator in the first argument to pick and choose conditionally what exactly you want to change.

Here's a brief example:

    String precio_gold = "FFF#vvty^kk^k#hhh9";
    precio_gold = precio_gold.replace(precio_gold.indexOf("#") ==3 ? "#": "^", "0");
    // precio_gold = precio_gold.replace("$", "");
    System.out.println(precio_gold);

This code checks if the "#" is at the 3rd index and if only its at 3rd index, it gets replaced with 0, else the ^ gets replaced with 0.

You can keep adding to the conditions after the : in the ternary operator.

Nice one lined approach. Hope it helps!

answered Jan 12, 2017 at 10:50

Sourav Purakayastha

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