Eclipse: Convert String Concat to StringBuilder

Here is a simple yet effective trick for all Eclipse users. In Java we do lot of String concatenation using plain old “” + “”. It is easy but not too effective. StringBuilder is always preferred if you have too many strings to concate.

In below screencast, I convert concatenated strings to StringBuilder using eclipse Ctrl + 1 option.

Move cursor on String “foo” and press Ctrl + 1. It opens a context menu. Select option Use “StringBuilder” for string concatenation

String foo = "This" + "is" + "Sparta";
	
System.out.println(foo);
Code language: Java (java)

Once done, the code will be converted to below:

StringBuilder stringBuilder = new StringBuilder();
		stringBuilder.append("This");
		stringBuilder.append("is");
		stringBuilder.append("Sparta");
String foo = stringBuilder.toString();
	
System.out.println(foo); 
Code language: Java (java)

Enjoy :)