Param3
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class Param3 { public int y; public void method1(int y) { y = y * 3; } public int getY() { return y; } } Param3 q3 = new Param3(); q3.y = 100; q3.method1(25); System.out.println(q3.getY()); what is the output for the system.out.println method and why
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- public class Animal { public static int population; private int age; } public Animal (int age) { this.age = age; population++; } + msg); public void say (String msg) { System.out.print("Saying: " System.out.print(" for "); System.out.print(getHuman Years()); System.out.println(" years."); } public int getHuman Years() { return age; } public class Mammal extends Animal { private String species; public Mammal(String species, int age) { super (age); this. species species; } } } = public int getHuman Years() { if (species.equals("dog")) 1 else return super.getHumanYears() * 7; return super.getHumanYears(); €10. public static void methodl (int i, int num) { for (int j = 1; j <= i; j++) { " "); System.out.print (num + num *= 2; } System.out.println(); } public static void main(String[] args) { int i = 1; while (i <= 6) { methodl (i, 2); i++; }public class CallStack{ // Called by func1() void func2 (){ System.out.println("In func2 method"); int a = 0; int b; b = 10 / a; } //Called by Main void func1(){ System.out.println("In func1 method"); this.func2 (); System.out.println("Back in func1 method"); } public static void main (String args[]){ CallStack myCallStack; myCallStack = new CallStack(); System.out.println("In the main method"); try { myCallStack.func1 (); }catch (ArithmeticException e) { System.out.println("Can't divide by Zero!"); } } } Examine the code to determine what it does. Compile and execute the code. Modify the main() method to handle the exception that is propagated to it. Use a try- catch block to display a meaningful error message when the exception occurs. Test your code. Notice that, although the exception was thrown in func2, it is caught by the catch block in the main method.
- public class MysteryReturn2 {3 public static void main(String[] args)4 {5 int x = 1;6 int y = 2;7 int z = 3;89 z = mystery(x, z, y);10 System.out.println(x + " " + y + " " + z);11 }1213 public static int mystery(int c, a, int b);14 {15 c--;16 a = 2 * b + c;17 b = a - 1;18 System.out.println(b + " " + c);1920 return a;21 }22 } 1. Line 13 contains 2 errors. What are they? 2. Rewrite line 13 with the errors identifed in Question 1 corrected.public class MysteryReturn2 {3 public static void main(String[] args)4 {5 int x = 1;6 int y = 2;7 int z = 3;89 z = mystery(x, z, y);10 System.out.println(x + " " + y + " " + z);11 }1213 public static int mystery(int c, a, int b);14 {15 c--;16 a = 2 * b + c;17 b = a - 1;18 System.out.println(b + " " + c);1920 return a;21 }22 } 1. The mystery method has three parameter variables, a, b, and c. What is the scope of these variables (that is, where can they be used by their name)?26. Assume the declaration of Exercise 24. A. Write the statements that derive the class dummyClass from class base as a private inheritance. (2 lines are { and }.) "A1 is { "A2 is "A3 is )) B. Determine which members of class base are private, protected, and public in class dummyClass. "B1 is dummyClass is a de
- 1) The UsingMethod class consists of a main method and a method called xMethod. What will the code print? public class UsingMethod {public static void main(String[] args) {double z = xMethod(3.5, 5.5);System.out.println(z);}public static double xMethod(double x, double y) {return x + y;}} 2) Identify the errors in the following programs a) 3 errorspublic class Test {public static void main(String[] args) {System.out.println(method2(3.4));} public static int method1(int n) {if (n > 0) return 1;else if (n == 0) return 0;else if (n < 0) return -1;}} b) 2 errorspublic class Test {public static void main(String[] args) {nPrintln(5, "Welcome to Java!");}public static void nPrintln(String message, int n) {for (int i = 0; i < n; i++) {System.out.println(message);}return n;}}class Param5 { private int a, b; public Param5() { b = 2; } public void method1(int b) { a = this.b + 5; System.out.println(a); // what is the output here? a = method2(b); System.out.println(a); // what is the output here? System.out.println(this.b); // what is the output here ? } public int method2(int a) { b = 2 + a; return this.a + b; } Param5 q5 = new Param5(); } q5.method1(3); I want to know each output please with explanation .. the code has no errorspublic class MyOutput { public static void main(String[] args) { int totalNumbers=6; Double dblAverage=4.5; Integer yourNumber= new Integer (20); int result=yourNumber+88; String myMessage="Exam"; System.out.println(totalNumbers+dblAverage+myMessage+result); }
- class overload { int x; double y; void add(int a , int b) { x = a + b; } void add(double c , double d) { y = c + d; } overload() { this.x 0; %3D this.y = 0; } %3D } class Overload_methods { public static void main(String args[]) { overload obj int a = 2; double b - 3.2; obj.add(a, a); obj.add(b, b); System.out.println(obj.x + } = new overload(); + obj.y); } #3Run the codeQUESTION 9 Public Class Employee { public static int y; Private int age; Public Employee(0{ age=0;} public int get_age() { return age;} Public Class Test { public static void main(String[] args) { Employee q = new Employee(); q.y=2; Employee.y=10; System.out.println("y=" + q.y); a. What is the output of the following code? b. Insert a System.out.println() statement that prints out q's agepublic class Base public void methodOne () { System.out.print ("A"); methodTwo (); } } public void methodTwo () { System.out.print("B"); } public void methodThree () { } public void methodThree (String s) { System.out.print("Hello, " + s); } System.out.print("Hello"); } class Derived extends Base { public void methodOne () { super.methodOne (); System.out.print ("C"); } public void methodTwo () { super.methodTwo (); System.out.print("D"); What is the name of the parent class? What is the name of the overloaded method? What is the name of the overriden method? What is the name of the child class? ich of Choose... Choose... Choose... Choose... following statements will give an error?