please help me with this java programming past paper

(a) Exceptions can be used in the Java programming languape to allow programmers to detect and gracefully handle erron i. Explain the difference between checked and ancheoked esceptions Define two exception classes, achecknd exception called ParseExcept ion and an unchecked i You are using the following code in your application publie elass DeliPanetsons publie statie int stringToInt (Stzing input) throws ParseException Describe, with an esample how you would use the stringToInt function in your code. 13 (b) Describe the main motivating factors behind wsing Generics in the Jasa progranmming language ) Rewrite the following data structure wsing Java generics (You may ignoee any o tial ermors that result from exceeding the sine of the ra publie elass Array private objeet [I values private int counter public Arraylint size) values- new Object [sizeli counter-0 publie void add (ob ject o) values Ieounter+1-0 public ?.ject get ut i) K return values [ i ] ) The following code has heen provided so you but it fails so sccesuliy compile publie elass ETest publie statie void main(Steing args113 int ai new Paircstring, DoubleK2.40 System-out . print in(a) ; publie statie ck, Vextends Integer int return pl.getValue p2.getValue a private K key private V value publie Pair tK key, V value) this.key keyi this.value-value publie V getvaluel eturn vale The following compile time emor is penerated. cannot be applied to PalrcSteing, Double> Paircstring, Do int aaddvals (new Palrcstring, Doublec. 4.0) new Palr 82.4.0 3 error dentify the source of the enor and suggest two ways in which is could be fised. H