StringEscapeUtils.escapeJava

Question

I am getting \u1F44A\u1F44A where i am expecting \ud83d\udc4d\ud83d\udc4d.

import org.apache.commons.lang3.StringEscapeUtils

val data=""

println(StringEscapeUtils.escapeJava(data))//\u1F44A\u1F44A

println(StringEscapeUtils.unescapeJava("\u1F44A\u1F44A"))//ὄAὄA

println(StringEscapeUtils.unescapeJava("\ud83d\udc4d\ud83d\udc4d"))//

how i get this \ud83d\udc4d\ud83d\udc4d ?

score 1 · Answer 1 · edited Nov 24 '20 at 07:21

1

Unicode: U+1F44D

UTF-16BE: D8 3D DC 4D

you can see that 1F44D uincode table

So

println(StringEscapeUtils.escapeJava(data))//\u1F44A\u1F44A
println(StringEscapeUtils.unescapeJava("\ud83d\udc4d\ud83d\udc4d"))//

Maybe the IDE console window uses utf-16be？ Eclipse can set the console window to use utf-16be or other

edited Nov 24 '20 at 07:21

Suraj Rao

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answered Nov 24 '20 at 06:48

xwd

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score 0 · Answer 2 · answered Jul 27 '14 at 12:29

0

It's a bug in Apache Commons-Lang 3.0 and 3.1. I think it's fixed in 3.2.0, so upgrade to 3.2.x or 3.3.x.

answered Jul 27 '14 at 12:29

Karol S

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score 0 · Answer 3 · answered Nov 24 '20 at 07:27

I don't think that we need the Apache Commons Library for this. We can easily achieve this in Scala using the standard libraries available.

val data: String =""

println(System.getProperty("file.encoding", "No encoding")))
// prints UTF-8

println(data.map(x => "\\u%04x".format(x.toInt)).mkString)
// prints \ud83d\udc4d\ud83d\udc4d

You can set your encoding by setting file.encoding parameter in the JVM config.

Tested on Scastie for Scala version 2.13.3.

StringEscapeUtils.escapeJava

3 Answers3