Problems with syntax-If Statements

[Guest_imported]

Just transferring over form other programming languages...and just can't find out the syntax to this:

I want to compare a string argument in Upper/Lower case, but my code is off:

if ((args[3] == "P&quot || (args[1] == "p&quot) {
weight=weight/2.2;
}
if ((args[1] == "I&quot || (args[3] == "i&quot) {
height=height/39.36;
}
what needs to change?

BMS, frustratingly lost/...

 

[wushutwist]

In future posts you need to state what problem you are having ie. Compile-time error, Runtime Exception, or Logical Error.

My main suggestion, since I don't know the intimate details of your program, is that you need to be using equals() instead of ==. In Java == compares the memory addresses of two object (ie are they the same object). The method equals() compares the contents. I am assuming you want to compare content. So you code would be:

if ((args[3].equals("P")) || (args[1].equals("p")))  {
        weight=weight/2.2;
    }
if ((args[1].equals("I")) || (args[3].equals("i"))) {
        height=height/39.36;
    }

Futhermore you could do a bit better and ensure a NullPointerException not thrown if one of the agruments is null with the following:

if (("P".equals(args[3])) || ("p".equals(args[1])))  {
        weight=weight/2.2;
    }
if (("I".equals(args[1])) || ("i".equals(args[3]))) {
        height=height/39.36;
    }

Wushutwist