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Help me this code step by step especially at static boolen convert  RSS feed

 
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public class Test {
public static void main(String[] args){
if( args.length > 0 ||
convert( args[0] )) {
System.out.print("Good ");
}
else {
System.out.print("Bad ");
}
System.out.println( number );
}

static float number = 0 ;
static boolean convert( String s ){
try {
number = Float.parseFloat( s );
return true ;
}catch (NumberFormatException e ){
number = Float.NaN ;
return false ;
}
}
}

Help me this code step by step especially at static boolen convert
 
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dear Karthik Rajashekaran

the static method boolean convert is meant to check the validity of the argument passed right!!! but unfortunately it will not work as you have used a short circuit OR operator( || ). recall that a short circuit operator need not execute both its operands , if the first is true then it ignores the second and returns/evaluates to true.Since this validation is done in the second part just the passing of a command argument is enough to evaluate the if statement to true.so the convert call is never called!!!
so the output is always Good number if a cmd argument is given(any argument) orelse a NullPointerException if no amd args are specified!!!
Regards
Simon


 
Karu Raj
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ho yes
thanks a lot.

I need to be more alert while doing it
 
It is sorta covered in the JavaRanch Style Guide.
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