In the following methods, find the error if any, circle the error part onlyand write the corrected change if any. (4 pt each) IN JAVA

(1) public double computeSumOfSquares(double a, double b) {

double sum;

sum = (a * a) + (b * b);

return sum;

}

(2) public int computeEquation1(int value, int value2, int k) {

int sum;

sum = (value1 * value2) + (k * value2);

return sum;

}

3. public void displayResult(double value, double rate, int years) {

double result;

result = value * (1+rate)years;

System.out.println(result);

}

4) Is this method correct for squaring an integer?

public static int square(int a) {

return

a * a;

}

(5) public double computeProduct (double num1, double num2) {

return (num1*num2);

}