changing case

[spud379]

hi
i'm trying to write this programme i think im nearly there. if its lower case i want to change it to upper and Visor verse. this also includes in the same word. eg

Hi tHeRE = hI ThEre

String a = args[0];
do
{
if (????????)
a = a.toUpperCase();
else
a = a.toLowerCase();
}
while(????)
System.out.println(a)
}

this is what i think not sure what to put in the IF statement. can any 1 help?

[r035198x]

hi
i'm trying to write this programme i think im nearly there. if its lower case i want to change it to upper and Visor verse. this also includes in the same word. eg

Hi tHeRE = hI ThEre

String a = args[0];
do
{
if (????????)
a = a.toUpperCase();
else
a = a.toLowerCase();
}
while(????)
System.out.println(a)
}

this is what i think not sure what to put in the IF statement. can any 1 help?

Since you should be looking at the statements character by character, you may want to to use the charAt method of the String class in conjuction with the methods of the character class.