java program that checks the pairing of (); []; {} ... i mean, for example, the equations inputed is a = {x[3*2(1+9)]+99}.. we know that there is no error in that eq... then the result would be *empty* which means there is no error.... but if you input a = {x[3*2(1+9]) + 99} , then there is an error... .the output would be ERROR.... because ] AND ) are swapped... please help me o.O