Why Dead Code Warning

I have dead code warning at this position: if('Email' == '+email.getText().toString()+'){ Toast.makeText(getApplicationContext(), 'email_id already available ', Toast.LENGTH_SHOR

Solution 1:

"Email" will never be equal to "+email.getText().toString()+". I think you wanted to use:

if ("Email".equals(email.getText().toString()))

Solution 2:

if("Email" == "+email.getText().toString()+")

"Email" can never be equal to "+email.getText().toString()+"

You probably wanted to write

if("Email" == email.getText().toString())  

and you should use the equal-Method to compare Strings:

if("Email".equals(email.getText().toString()))  

You'll find more informations about comparing Strings in Java HERE

Solution 3:

It should be

 if("Email".equals(mail.getText().toString()))
    {
     Toast.makeText(getApplicationContext(), "email_id already available ", Toast.LENGTH_SHORT).show(); 
    }

Solution 4:

Replace "Email" == "+email.getText().toString()+" with "Email".equals(email.getText().toString())

Strings should always be compared using the equals() method.'

Also, consider defining constants, e.g.

public static final String KEY_EMAIL = "Email"

then use

if(email.getText().toString().equals(KEY_EMAIL)) {...}

Solution 5:

you should use

if(email.getText().toString().equals("Email"){ 
 Toast.makeText(getApplicationContext(), "email_id already available ", Toast.LENGTH_SHORT).show(); 
}

or use ignoreCaseEquals, explanation why it is dead code you must know by now by reading above answers