Table of Contents
In this post, we will see difference between StringBuffer and StringBuilder in java
When you run above program, you may get below output:
You can go through core java interview questions for more such questions.
StringBuffer vs StringBuilder
|
Parameter
|
StringBuffer
|
StringBuilder
|
|---|---|---|
|
Thread-safe
|
StringBuffer is thread safe. Two threads can not call methods of StringBuffer simultaneously.
|
StringBuilder is not thread safe, so two threads can call methods of StringBuilder simultaneously.
|
|
Performance
|
It is less performance efficient as it is thread-safe |
It is more performance efficient as it is not thread-safe.
|
Performance comparison between StringBuffer and StringBuilder in single thread environment
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 |
package org.arpit.java2blog; public class StringBuilderAndBufferMainTest { public static void main(String[] args) { long startTime = System.currentTimeMillis(); StringBuffer sb = new StringBuffer("Java"); for (int i=0; i<100000; i++){ sb.append("2Blog"); } System.out.println("Time taken by StringBuffer: " + (System.currentTimeMillis() - startTime) + "ms"); startTime = System.currentTimeMillis(); StringBuilder sbuilder = new StringBuilder("Java"); for (int i=0; i<100000; i++){ sbuilder.append("2Blog"); } System.out.println("Time taken by StringBuilder: " + (System.currentTimeMillis() - startTime) + "ms"); } } |
|
1 2 3 4 |
Time taken by StringBuffer: 21ms Time taken by StringBuilder: 9ms |
Was this post helpful?
Let us know if this post was helpful. Feedbacks are monitored on daily basis. Please do provide feedback as that\'s the only way to improve.
