How many characters can a Java StringBuilder hold?

java stringbuilder jdk1.6 capacity
Narendra Rawat picture Narendra Rawat · Jun 28, 2016 · Viewed 14.2k times · Source

Does StringBuilder have a limit of characters for maximum capacity in JAVA.

StringBuilder url=new StringBuilder();

stmt = connnection.createStatement();
String sql="SOME QUERY";
rs = stmt.executeQuery(sql);
while(rs.next())
{
    String emailId=rs.getString("USER_EMAIL_ID");
     url.append(emailId);  
}

does StringBuilder variable 'url' have a maximum capacity, or it can hold everything?

Answer

Subhrajyoti Majumder picture Subhrajyoti Majumder · Jun 28, 2016

Yes, it has limitation in capacity of max integer which 2147483647(technically).

StringBuilder internally holds chracters in char[] object, and array has limitation in size. read more about it on other thread

Related questions

Difference between StringBuilder and StringBuffer

What is the main difference between StringBuffer and StringBuilder? Is there any performance issues when deciding on any one of these?

Read More
How can I clear or empty a StringBuilder?

I'm using a StringBuilder in a loop and every x iterations I want to empty it and start with an empty StringBuilder, but I can't see any method similar to the .NET StringBuilder.Clear in the documentation, just the delete …

Read More
How to append a newline to StringBuilder

I have a StringBuilder object, StringBuilder result = new StringBuilder(); result.append(someChar); Now I want to append a newline character to the StringBuilder. How can I do it? result.append("/n"); Does not work. So, I was thinking about writing …

Read More