java - getResourceAsStream returns NullpointerException -

this question has answer here:

• getresourceasstream() returning null [duplicate] 7 answers

in spring, want image display on browser. image located in main project i.e.

> myproject    - src    - target    - img.png 

this means img.png in root dont supply path returns nullpointerexception. tried adding image in src , changed path src\img.png still gave npe.

please note, project using maven.

stack trace:

java.lang.nullpointerexception: null     @ org.apache.commons.io.ioutils.copylarge(ioutils.java:1792) ~[commons-io-2.4.jar:2.4]     @ org.apache.commons.io.ioutils.copylarge(ioutils.java:1769) ~[commons-io-2.4.jar:2.4]     @ org.apache.commons.io.ioutils.copy(ioutils.java:1744) ~[commons-io-2.4.jar:2.4]     @ org.apache.commons.io.ioutils.tobytearray(ioutils.java:462) ~[commons-io-2.4.jar:2.4] 

here code use:

inputstream in = dataservice.class.getresourceasstream("img.png");          final httpheaders headers = new httpheaders();         headers.setcontenttype(mediatype.image_png);          result.setdata(new responseentity<byte[]>(ioutils.tobytearray(in), headers, httpstatus.created)); 

comments on question being marked closure:

• the question related programming api getresourceasstream says this:

returns url object or null if no resource name found

my code returning null when tried adding img.png different locations.

• this question not duplicate of this: getresourceasstream() returning null

the answer in question says file must in same directory this in question, though added image same location class dataservice was, did not work.

the issue here /src root of classpath (it depends on how compile project), , should put img.png src folder , following code work

dataservice.class.getresourceasstream("img.png");

generally getresourceasstream() looks files root of classpath.