Can somebody help me in ByteArrayinputStream read(Byte[]) is not blocking.

Question

I am setting String "User" in inputStream now Once it is read and inputsteram is blocking for other input i want to send
another strign in input Stream i.e "password" so first "User" will print and then it will print "Password", but ins.read(buff) method is not blocking and returning -1 after reading "User".
Following is the program:
package abc;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
public class InStream {
InputStream in;
String value;
boolean flag=true;
Inner inc;
InputStream getInStream() {
ByteArrayInputStream bais = new ByteArrayInputStream(value.getBytes());
return bais;
void setValue(String value) {
try {
this.value=value;
} catch (Exception e) {
void execute() {
try {
setValue("User");
inc = new Inner();
inc.start();
Thread.sleep(10);
setValue("Password");
inc.ins=getInStream();
} catch (Exception e) {
e.printStackTrace();
class Inner extends Thread {
InputStream ins;
public void run() {
try {
int retRead = 0;
byte[] buff = new byte[2048];
String receivedStr=null;
ins = getInStream();
do{
retRead = ins.read(buff);
receivedStr = new String(buff, 0, retRead);
System.out.println(receivedStr);
}while (retRead>0);
System.out.println("Out");
} catch (Exception e) {
e.printStackTrace();
public static void main(String[] args){
InStream instream=new InStream();
instream.execute();
}

Answer 1

You create that byte[] input stream once and use it to read its contents into a large buffer. So it is read to the end at the first time, and the next reading will indicate the end.
What is the problem?
ins = getInStream();
do{
retRead = ins.read(buff);
receivedStr = new String(buff, 0, retRead);
System.out.println(receivedStr);
}while (retRead>0);
System.out.println("Out");
} catch (Exception e) {
e.printStackTrace();
}