To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) short myshort = 99S; - This option is incorrect because the letter 'S' at the end of the number is not a valid suffix for a short data type. The correct suffix for a short data type is 's' (lowercase).

Option B) String name = 'Excellent tutorial Mr Green'; - This option is incorrect because string literals in Java should be enclosed in double quotation marks ("). Single quotation marks (') are used for character literals.

Option C) char c = 17c; - This option is incorrect because the letter 'c' at the end of the number is not a valid suffix for a char data type. If you want to assign a numeric value to a char variable, you can use a numeric literal without any suffix.

Option D) int z = 015; - This option is correct because the number 015 is a valid octal (base 8) literal in Java. Octal literals are represented by a leading zero (0) followed by digits from 0 to 7.

The correct answer is D. This option is correct because it assigns a valid octal value to an int variable.

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To answer this question, we need to understand what Java modifiers are.

Java modifiers are keywords that are used to modify classes, methods, and variables in Java. They specify the access level, visibility, and behavior of a class, method, or variable.

Let's go through each option to understand why it is correct or incorrect:

Option A) public - This option is correct because "public" is a Java modifier. It is used to specify that a class, method, or variable is accessible from anywhere.

Option B) private - This option is correct because "private" is a Java modifier. It is used to specify that a class, method, or variable is only accessible within the same class.

Option C) friendly - This option is incorrect because "friendly" is not a valid Java modifier. The correct keyword is "default", which is used when no access modifier is specified. It specifies that a class, method, or variable is accessible within the same package.

Option D) transient - This option is correct because "transient" is a Java modifier. It is used to specify that a variable should not be serialized when an object is serialized.

The correct answer is A, B, and D. These options are correct because "public", "private", and "transient" are valid Java modifiers.

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To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) To get access to hardware that Java does not know about - This option is correct because defining a method as native allows you to access hardware resources or libraries that are not directly supported by Java. By writing native code in a language such as C or C++, you can interact with the hardware or use system-level libraries that Java does not provide direct access to.

Option B) To define a new data type such as an unsigned integer - This option is incorrect. Defining a new data type or extending the Java type system is not the purpose of declaring a method as native.

Option C) To write optimized code for performance in a language such as C/C++ - This option is correct. By declaring a method as native, you can write performance-critical code in a lower-level language like C or C++. This can be beneficial when you need to achieve better performance than what Java's virtual machine provides.

Option D) To overcome the limitation of the private scope of the method - This option is incorrect. Declaring a method as native does not affect the scope of the method. The private scope of a method is determined by the access modifier, not by declaring it as native.

The correct answers are A and C. These options are correct because defining a method as native allows you to access hardware resources that Java does not know about and write optimized code for performance in a language such as C/C++.

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To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) 0 - This option is incorrect because the value of "i" is incremented after being assigned to "j" in the statement "i = j++". Therefore, the value of "i" will be 1, not 0.

Option B) 1 - This option is correct because the value of "i" is incremented after being assigned to "j" in the statement "i = j++". Therefore, the value of "i" will be 1.

Option C) 2 - This option is incorrect because the value of "i" is incremented after being assigned to "j" in the statement "i = j++". Therefore, the value of "i" will be 1, not 2.

Option D) 3 - This option is incorrect because the value of "i" is incremented after being assigned to "j" in the statement "i = j++". Therefore, the value of "i" will be 1, not 3.

The correct answer is B) 1. This option is correct because the value of "i" is incremented after being assigned to "j" in the statement "i = j++". Therefore, the value of "i" will be 1.

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