✏️ Explanatory Question

(h) Evaluate the following expression if the value of x=2, y=3 and z=1.

  v=x + --z + y++ + y

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← Previous (a) Write a Java expression for the following: \[ \lvert x^2 + 2xy \rvert \] (b) Write the return data type of the following functions: startsWith() random() (c) If the value of basic=1500, what will be the value of tax after the following statement is executed? tax = basic > 1200 ? 200 :100; (d) Give the output of following code and mention how many times the loop will execute? int i; for( i=5; i>=1; i--) { if(i%2 == 1) continue; System.out.print(i+" "); } (e) State a difference between call by value and call by reference. (f) Give the output of the following:       Math.sqrt(Math.max(9,16)) (g) Write the output for the following: String s1 = "phoenix"; String s2 ="island"; System.out.println(s1.substring(0).concat(s2.substring(2))); System.out.println(s2.toUpperCase()); (h) Evaluate the following expression if the value of x=2, y=3 and z=1.   v=x + --z + y++ + y (i) String x[] = {"Artificial intelligence", "IOT", "Machine learning", "Big data"}; Give the output of the following statements: System.out.println(x[3]); System.out.println(x.length); (j) What is meant by a package? Give an example.
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Answer with Explanation

(h) Evaluate the following expression if the value of x=2, y=3 and z=1.

  v=x + --z + y++ + y

Answer

    v = x + --z + y++ + y
⇒ v = 2 + 0 + 3 + 4
⇒ v = 9

← Previous (a) Write a Java expression for the following: \[ \lvert x^2 + 2xy \rvert \] (b) Write the return data type of the following functions: startsWith() random() (c) If the value of basic=1500, what will be the value of tax after the following statement is executed? tax = basic > 1200 ? 200 :100; (d) Give the output of following code and mention how many times the loop will execute? int i; for( i=5; i>=1; i--) { if(i%2 == 1) continue; System.out.print(i+" "); } (e) State a difference between call by value and call by reference. (f) Give the output of the following:       Math.sqrt(Math.max(9,16)) (g) Write the output for the following: String s1 = "phoenix"; String s2 ="island"; System.out.println(s1.substring(0).concat(s2.substring(2))); System.out.println(s2.toUpperCase()); (h) Evaluate the following expression if the value of x=2, y=3 and z=1.   v=x + --z + y++ + y (i) String x[] = {"Artificial intelligence", "IOT", "Machine learning", "Big data"}; Give the output of the following statements: System.out.println(x[3]); System.out.println(x.length); (j) What is meant by a package? Give an example.
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