Concatenate Strings In Java Example

Chapter: String Handling Last Updated: 21-08-2016 18:26:37 UTC

Program:

            /* ............... START ............... */
                
public class JavaStringConcatenationExample {

	public static void main(String[] args) {
		long startTime = System.currentTimeMillis();
		for (int i = 0; i < 5000; i++) {
			String result = "This is" + "testing the" + "difference" + "between" + "String" + "and" + "StringBuffer";
		}
		long endTime = System.currentTimeMillis();
		System.out
				.println("Time taken for string" + "concatenation using + operator : " + (endTime - startTime) + " ms");
		long startTime1 = System.currentTimeMillis();
		for (int i = 0; i < 5000; i++) {
			StringBuffer result = new StringBuffer();
			result.append("This is");
			result.append("testing the");
			result.append("difference");
			result.append("between");
			result.append("String");
			result.append("and");
			result.append("StringBuffer");
		}
		long endTime1 = System.currentTimeMillis();
		System.out.println(
				"Time taken for String concatenation" + "using StringBuffer : " + (endTime1 - startTime1) + " ms");
	}
}
                /* ............... END ............... */
        

Output

Time taken for stringconcatenation using + operator : 0 ms
Time taken for String concatenationusing StringBuffer : 13 ms

Notes:

  • Example shows performance of concatenation by using "+" operator and StringBuffer.append() method.

Tags

Concatenate Strings, Java, String

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