Instead of this if(ID =="A"||"a"){, you should write if(ID =="A"|| ID == "a"){ because your statements: if(ID =="A"||"a"){ means if (ID is "A" or the ascii of "a"). The ascii of "a" is bigger than 0, that means it will be read as true value in the if statement. That's why your statement will be equal with if(ID =="A"|| true){ which is why only this statement will be executed.
