What is the result of the following code? (Choose all that apply) 13: String a = ” “; 14: a += 2; 15: a +=  ‘c’; 16: a +=  false; 17: if (a == “2cfalse”) System.out.println(“==”); 18: if (a.equals(“2cfalse”)) System.out.println(“eaqals”);

The mass of a stable nucleus is always ________ the sum of the masses of its individual free nucleons.

Show  the printout of the following segment.  ( line numbers are not a feature of  a code) 1: int[ ][ ] r = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}; 2: for (int k = 0; k < r.length; k++) 3:    for (int j = 0; j

1. Show the output of running the class C in the following code lines – 1 point 2. Explain why you get this output – 1.5 points Q33.jpg

Show  the output of the following program when it run from command line using the following command ( line numbers are not a feature of  a code) : java Test I have a dream 1: public class Test { 4:    for (int i = 0; i < args.length; i++) 7: }

Choose the valid identifiers from those listed below

Use a switch statement to rewrite the following if statement // Find interest rate based on year if (numOfYears == 7)    annualInterestRate = 7.25; else if (numOfYears == 15)    annualInterestRate = 8.50; else if (numOfYears == 30)    annualInterestRate = 9.0; else { System.out.println(“Wrong number of years”); System.exit(0); }

What is the output of running the class C. Q34.jpg

Does the following segment of a code compile? Explain why it does or why it doesn’t compile. Q21.jpg

Show and explain the printout of the following segment:  ( line numbers are not a feature of  a code) 1: double[] numbers = {1, 4.3, 5.55, 3.4}; 2: double[] x = new double[numbers.length]; 3: System.arraycopy(numbers, 1, x, 0, 3); 4: for (int i = 0; i < x.length; i++) 5:    System.out.print(x[i] + " ");