Java检查字符串特殊字符

Question

I have a string that contains: ½

From my understand i belive this is \�

Can someone help me with why this syntax does not work:

if (promotions.getText().contains("\uFFFD")) {
                return promotions;
}

Answer 1

½ is \½

Therefore this should work

if (promotions.getText().contains("\u00BD")) {

Answer 2

Try this:

if (promotions.getText().contains("\u00BD"))
{ 
    return promotions;
}