How does one create an InputStream from a String

Question

I m not used to working with streams in Java - how do I create an InputStream from a String

User · Accepted Answer

Here you go   InputStream is   new ByteArrayInputStream  myString getBytes        Update For multi-byte support use  thanks to Aaron Waibel s comment    InputStream is   new ByteArrayInputStream Charset forName  UTF-16   encode myString  array       Please see ByteArrayInputStream manual    It is safe to use a charset argument in String getBytes charset  method above   After JDK 7  you can use  java nio charset StandardCharsets UTF 16   instead of hardcoded encoding string   InputStream is   new ByteArrayInputStream StandardCharsets UTF 16 encode myString  array

User · Answer

InputStream in   new ByteArrayInputStream yourstring getBytes

User · Answer

Instead of CharSet forName  using com google common base Charsets from Google s Guava  http   code google com p guava-libraries wiki StringsExplained Charsets  is is slightly nicer   InputStream is   new ByteArrayInputStream  myString getBytes Charsets UTF 8       Which CharSet you use depends entirely on what you re going to do with the InputStream  of course

User · Answer

Beginning with Java 7  you can use the following idiom   String someString          InputStream is   new ByteArrayInputStream  someString getBytes StandardCharsets UTF 8

User · Answer

You could do this   InputStream in   new ByteArrayInputStream string getBytes  UTF-8       Note the UTF-8 encoding  You should specify the character set that you want the bytes encoded into  It s common to choose UTF-8 if you don t specifically need anything else  Otherwise if you select nothing you ll get the default encoding that can vary between systems  From the JavaDoc      The behavior of this method when this string cannot be encoded in the default charset is unspecified  The CharsetEncoder class should be used when more control over the encoding process is required

User · Answer

Java 7   It s possible to take advantage of the StandardCharsets JDK class   String str     InputStream is   new ByteArrayInputStream StandardCharsets UTF 16 encode str  array

[java] How does one create an InputStream from a String?

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