Wonderful string content check

Question

I'm using this code and it retrieve incoming message successfully:

Bundle bundle = intent.getExtras();
Object[] object = (Object[]) bundle.get("pdus");
SmsMessage smsMessage = SmsMessage.createFromPdu((byte[]) object[0]);
String message = smsMessage.getMessageBody().trim();

The message is exactly equal to "test" and message.length() is equal to 4 (no hidden chars) but the bellow command returns false!

if (message == "test") ...

How to use == instead equals()?

Thanks...

Use `equals("test")` method, since you are comparing the reference — SorryForMyEnglish, Mar 03 '15 at 07:40
How can you use `==` for comparing string? Use `str1.equals(str2)` — Apurva, Mar 03 '15 at 07:54
I'm voting to close this question as off-topic because this question reveals that the OP requires an even **minimal knowledge** of Java. — Phantômaxx, Mar 03 '15 at 08:37

score 2 · Accepted Answer · edited May 23 '17 at 11:52

2

You should use below:-

message.equals("test")

for more info read below question:-

How do I compare strings in Java?

edited May 23 '17 at 11:52

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answered Mar 03 '15 at 07:41

duggu

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Thanks, it works, but I don't want to use equals() in switch/case frequently, how to check it normally with == ? – Mohammad Lotfi Mar 03 '15 at 07:47
@MohammadLotfi seriously how can you compare `Strings` with == ? – Maveňツ Mar 03 '15 at 08:15
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@MohammadLotfi `I don't want to use equals()` ... Then simply give up and **don't compare strings**!! Since **there is no other way**. – Phantômaxx Mar 03 '15 at 08:36

score 0 · Answer 2 · edited May 23 '17 at 12:08

0

Use

message.equals("test")

“==” operator is actually checking to see if the string objects (obj1 and obj2) refer to the exact same memory location.

But, the equals() method is actually meant to compare the contents (values) of 2 objects, and not their location in memory.

see What's the difference between ".equals" and "=="? for more details

edited May 23 '17 at 12:08

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answered Mar 03 '15 at 07:45

@MohammadLotfi You simply **can't** – Phantômaxx Mar 03 '15 at 09:19

Wonderful string content check

2 Answers2