No. of string instances

[Ravinder Rana]

Consider the following code:

private void getObject(String jobType) {
    
    if(jobType.indexOf("Teacher") > -1) {
    return new Teacher();
    } else if(jobType.indexOf("Prof") > -1) {
                return new Prof();
        } else if(jobType.indexOf("Lecturer") > -1) {
                return new Lecturer();
        } else {
                return null;
        }
}

Now, suppose 10 threads are concurrently executing this method. How many instances of String "Teacher", "Prof", and "Lecturer" will get created - 3 or 10*3??

[Jesper de Jong]

Three; it doesn't matter how many threads call this at the same time or how many times you execute the code. String literals are pooled.

[Ilja Preuss]

Originally posted by Jesper Young:
Three; it doesn't matter how many threads call this at the same time or how many times you execute the code. String literals are pooled.

And even if String literals weren't pooled, it would still be three, because every literal exists only once in the byte code.

[Sidd Kulk]

And what about non-String objects? Say, for example, StringBuffer.