Question

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Java string comparison?

I have encounter the following problem, I have an object called “lang“, is a result from a method LanguageDetector.detect() which output a string.

lang = LanguageDetector.detect();

So I would want to check whether the language is english, so I am checking,

lang == "en"

The following screen is my debug screen, my lang is showing “en”, however my lang == “en” is showing false and lang.toString() == “en” is false, does anyone encounter following problem before and have a possible solution?

Answer 1

Use equals() method of String object instead of direct comparison.

String first = new String("Hello");
String second = new String("Hello");

first == second will return false.

first.equals(second) will return true.