java - Eliminate default zeros while creating string from byte array -
i getting bytes iostream , converting string. string extracting sequence using substring api.
size of bytearray 128 bytes. if stream contains 10 bytes , remaining filled zero[initially filled]. converting byte array string passing string constructor new string(byte[]) , checking length. length 128. why showing 128? should show 10 byte character length. how eliminate 0 while converting string. there api's eliminate default zeros in byte array. it's creating problem while creating substring constructed string.
byte[] b = { 99, 116, 101, 100, 46, 13, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} system.out.println("byte length = " + b.length); string str; try { str = new string(b, "utf-8"); system.out.println("string length = " + str.length()); system.out.println(str); system.out.println(" ## substring = " + str.substring(0)); system.out.println(" substring length = " + str.substring(0).length()); system.out.println("done......"); } catch (unsupportedencodingexception e) { // todo auto-generated catch block e.printstacktrace(); }0, 0, 0 };
when read inputstream, tell how many bytes read. length of byte[] irrelevant (other defining max number of bytes read in single call). there should no need later go examine byte[] try , determine how of data relevant. pay attention return value read , use when creating string.
additionally, if of data text, consider using inputstreamreader, perhaps in combination bufferedreader.
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