Java – how to convert a stringreader to a string?

I'm trying to convert my stringreader back to a regular string, as shown in the figure:

String string = reader.toString();

But when I try to read this string, it's like this:

System.out.println("string: "+string);

What I get is a pointer value, as follows:

java.io.StringReader@2c552c55

Did I make a mistake reading the string?

Solution

The toString method of stringreader does not return the internal buffer of stringreader

You need to read this from stringreader

I recommend using an overload of read that accepts character arrays Batch reading speed is higher than single character reading

Namely

//use string builder to avoid unnecessary string creation.
StringBuilder builder = new StringBuilder();
int charsRead = -1;
char[] chars = new char[100];
do{
    charsRead = reader.read(chars,chars.length);
    //if we have valid chars,append them to end of string.
    if(charsRead>0)
        builder.append(chars,charsRead);
}while(charsRead>0);
String stringReadFromReader = builder.toString();
System.out.println("String read = "+stringReadFromReader);