android: String value match another String value using operand == not working?

Hopefully this is an easy fix, but for the moment is is boggling me (Actionscript programmer new to Java programming).

I have a string variable coming from getExtra that I am comparing to a static sting in an if statement:

Bundle extras = getIntent().getExtras();
dir = extras.getString("com.activity.Dir");

Then I am utilizing this in an if statement

if (dir == "content"){
    // load page content
} else {
    // load a menu
}

I am Toasting the value of dir on th开发者_运维百科e line before it and regardless of the value it will not hit the == statement; ie: if dir == "content", it hits the else; if dir == "foo", it hits the else, etc.

I tried placing dir into another String var and used .toString();

String directive = dir.toString();

That does the same thing. What am I missing here?

SOLVED: Used dir.equals("content"); // Thanks for you being patient with me SO!

You must not compare strings via ==, but via .equals()

Strings are Objects, and to do correct Object equality comparisions, you need to use

dir.equals("content");

or better yet (to avoid possible null pointer exceptions)

"content".equals(dir);

You should use equals for Strings on Java.

2 tips:

• Add the string you know it isn't null to avoid nullpointers. Ex: "compare".equals(string)
• Use equalsIgnoreCase() instead of equals if you wish to compare strings and ignore the case differences.

Use the equals method instead of ==

"vuqar"=="vuqar" or "vuqar"!="vuqar" not works correct

You have to use

if(vuqar.equals("vuqar")){//action}

OR

if(!"vuqar".equals("vuqar")){//action}