String If Statements

[anthropamorphic]

Hello, I have recently encountered a problem where I'm not sure exactly how to do an if statement in check for strings. I do know how to check for numbers just for some reason I can't seem to figure this out.

I thought it would be something like
if(fn == "hello){
System.out.println("Whats Up?");

}

but that didn't work

[Junky]

This is one of the most common problems encountered by n00bs and one the most often asked questions. Use the equals method instead. Do a search and find the 1000000000 times it has been explained.

[mine0926]

Use code tags when posting codes.

As what junky said use equals() method:

    if("hello".equals(aString))
    {
        //your code
    }

[DarrylBurke]

This is one of the most common problems encountered by n00bs and one the most often asked questions. Use the equals method instead. Do a search and find the 1000000000 times it has been explained.

You missed a few zeros

db

[Junky]

My finger got tired!

[Dark]

My finger got tired!

You could have just held the key down

[jatinkansagara]

if(fn.equals("hello"){
System.out.println("Whats Up?");
}

this code is work because == is used for same object but two reference are pointing to same object that time use == operator.

[Dark]

To clarify what jatinkansagara said, you would use the == operator to test if two object references reference the same object. See example.

class MyProgram
{
     public static void main(String[] args)
     {
          Object foo1 = new Object();
          Object foo2 = new Object();
          Object foo3 = foo1;
          
          if(foo1 == foo3)
              System.out.println("Foo1 does equal Foo3!");
          if(foo1 == foo2)
              System.out.println("Foo1 does equal Foo2!");
          else
              System.out.println("Foo1 does not equal Foo2!");
     }
}