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Size of an object and a string in Java


Size of an object and a string in Java

By : huthief
Date : November 25 2020, 07:06 PM
wish help you to fix your issue The objective answer first:
Primitive data types are documented here Strings are more complicated because the JVM can intern them. See a good explanation here
code :


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Serialized object size vs in memory object size in Java

Serialized object size vs in memory object size in Java


By : user3444991
Date : March 29 2020, 07:55 AM
I hope this helps you . The size in memory will be usually between half and double the serializable size. The most extreme example might be the Byte which is more than 80 bytes Serialized can be 16 bytes in memory.
You can use a profiler to tell you how much memory an object uses. Another way is to use a tool based on Instrumentation.getObjectSize(object)
What is the maximum size of a `String` object in Java?

What is the maximum size of a `String` object in Java?


By : Patrick Gorrell
Date : March 29 2020, 07:55 AM
may help you . Strings contain an array of chars, so I think you can have at most 2^31 - 1 characters in a Java String. This is the value of Integer.MAX_VALUE.
Any String larger than that, and you can't even index all of the elements.
Measure string object size Java

Measure string object size Java


By : Guy Sh
Date : March 29 2020, 07:55 AM
it helps some times The first one only uses string literals, which are always present (loaded by the classloader during class initialization), so the assignments don't increase memory.
The second one only increases memory in the second assignment, for the same reason.
Instrumenting java string object size gives incorrect result

Instrumenting java string object size gives incorrect result


By : TheArcane
Date : March 29 2020, 07:55 AM
this one helps. A String object doesn't contain the String data but is a wrapper for a byte[] or char[] which contains the actual data.
You need to extract the underlying array and get it's size as well.
Getting string size in java (without having a Graphics object available)

Getting string size in java (without having a Graphics object available)


By : Hamza FIhmak
Date : March 29 2020, 07:55 AM
I hope this helps . Try with the FontMetrics class; the stringWidth method returns the size of a string. An example:
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