Which of These Array Declaration Statement Is Not Legal

Option A is correct. A public access modifier is acceptable. Method prototypes in an interface are all abstract because of their declaration and should not be declared abstract. (3) and (5) are incorrect because you cannot declare a table of only one size. Size is only necessary if the array has actually been instantiated (and the JVM needs to know how much space to allocate to the array, depending on the array type and size). 2) To declare a one-dimensional array, use this general form What are the valid declarations in an interface definition? 4) Which of the following statements is valid? The size of an array is always associated with the instance of the array (right), not the table reference (left). Which of the following code fragments correctly initializes a two-dimensional array of characters named cA with a size that refers to cA[2][3] to a valid element? The size of the array is implicitly specified by the initialization code. The D option is incorrect (and does not compile) because it declares an array with a size. Tables should never be given a size when they are declared.

(1), (2) and (4) are legal statements. You can use a table declaration to place square brackets to the right or left of the identifier. Option A sounds strange, but it`s perfectly legal to divide parentheses into a multidimensional array and place them on either side of the identifier. Although programming this way would only annoy your fellow programmers, for the exam you should know that it is legal. 5) What is the result of this program? class array_output { public static void main(String args[]) { int array_variable [] = new int[10]; for (int i = 0; i { array_variable[i] = i; System.out.print(array_variable[i] + ” “); i++; } } } Which of the following correctly declares a variable that can contain an array of 10 integers? Member declarations in an interface do not allow the use of certain declaration modifiers. You cannot use Transient, Ephemeral, or Synchronized in a member declaration in an interface. In addition, you should not use private and protected identifiers when declaring members of an interface. Option C is incorrect because it indicates a declaration of a legal table without initialization. Which of the following options does an array declare and initialize with five numbers? The size of the table cannot be specified as indicated in points (b) and (e). (1), (2) and (3) are correct. Interfaces can have constants that are always implicitly public, static, and definitive.

Public, static, and final interface constant declarations are optional in any combination. Option B is the legal way to declare and initialize a five-element array. Which of these table declaration instructions are not legal? The A option is incorrect because it shows an example of instantiating a class named Array, passing an integer value of 5 to the object`s constructor. If you don`t see the brackets, you can be sure that there is no real array object! In other words, an Array object (an instance of the Array class) is not the same as an Array object. (1), (3) and (6) are correct. character C1 = 064770; is an octal representation of the integer value 27128, which is legal because it fits into an unsigned 16-bit integer. char c3 = 0xbeef; is a hexadecimal representation of the integer value 48879 that fits in a 16-bit unsigned integer. char c6 = `uface`; is a Unicode representation of a character. double daaa[][][] = new double[3][][]; double d = 100.0; double[][] daa = new double[1][1]; A.

daaa[0] = d; B. daaa[0] = daa; C. daaa[0] = daa[0]; D. daa[1][1] = d; E. daa = daaa[0] ÐÐμÑ ÑлÐμкÑÑÐ3/4Ð1/2Ð1/2Ð3/4й вÐμÑÑÐ ̧Ð ̧ ̧ ̧ Khalid A. Mughal is an Associate Professor at the Faculty of Computer Science, University of Bergen, Norway. During his long career, he has designed and implemented numerous courses on Java, object-oriented systems development, and compilation techniques. He has also given seminars for the IT industry. He is the lead author of Java Som Forste Programmringssprak (Java as the first programming language), published by Cappelen Akademisk Forlag, 2002. It does not compile. B. At run time, a NullPointerException exception is thrown.

C. At run time, an IndexOutOfBoundsException exception is thrown. D. 222 E. null Which of the following is not causing problems at compile or run time? 1. char[][] cA = { { `a`, `b`, `c` }, { `a`, `b`, `c` } }; 2. tank cA[][] = new tank[3][]; for (int i = 0; i<cA.length; i++) cA[i] = new char[4]; 3.char cA[][] = { new char[ ]{ `a`, `b`, `c` } , new char[ ]{ `a`, `b`, `c` } }; 4char cA[3][2] = new char[][] { { `a`, `b`, `c` }, { `a`, `b`,`c` } }; 5.char[][] cA = { "1234", "1234", "1234" }; 1) What is the value of a[1] after running the following code? int[] a = {0, 2, 4, 1, 3}; for(int i = 0; i a[i] = a[(a[i] + 3) % a.length]; char c4 = u0022; is incorrect because the single quotation marks are missing. ð1/2аÑÐμÐ1/4 ðºÑÑпð1/2ðμйÑÐμÐ1/4 ð² ð1/4Ð ̧ÑÐμð1/4аа· ð̧ð1/2Ðμ ð¿ÑÐμÐ ́ÑÑаа°Ð²Ð»ÐμÐ1/2Ñð»ÐμкÑÑÐ3/4Ð1/2Ð1/2ÑÐμ ðºÐ1/2Ð ̧гР̧, ðºð3/4ÑÐ3/4ÑÑÐμ ð1/4жÐ1/2Ð3/4 ÑÐ ̧ÑаÑÑð² бÑаÑз ÐμÑÐμ, Ð1/2аааÐ1/2Ð3/4Ð1/4лÐμÑÐ3/4Ð1/2Ðμð»Ð ̧ ÑпÐμÑÐ ̧алÑÐ1/2Ð3/4Ð1/4 ÑÑÑÑÑÐ3/4йÑÑйÑÑвðμ. अ अ र आप कम्पटीशन एग्जाम की ऑनलाइन तैयारी कर रहे है तो यहाँ से आप फ्री में Online Test Option C is wrong. static refers to the class, not an instance. tank c2 = `face`; is incorrect because you cannot insert more than one character into a character literal.

The only other acceptable character literal that can be enclosed in single quotes is a Unicode value, and Unicode literals must always begin with a `u`. A. int[ ] i[ ] = { { 1, 2 }, { 1 }, { }, { 1, 2, 3 } } ; B. int i[ ] = new int[2] {1, 2}; C. int i[ ][ ] = new int[ ][ ] { {1, 2, 3}, {4, 5, 6} } ; D. int i[ ][ ] = { { 1, 2 }, new int[ 2 ] }; E. int i[4] = { 1, 2, 3, 4 }; Option B is incorrect. The last modifier means that this method cannot be constructed in a subclass. A final method cannot be abstract. A.

int[ ] iA B. int[10] iA C. int iA[ ] D. Object[ ] iA E. Object[10] iA Option D is incorrect. protected is not allowed when declaring a method of an interface. See information below. Rolf W. Rasmussen is a systems engineer at Vizrt, a company that develops real-time graphics systems for television, film, and the Web. Previously, he worked on cleanroom implementations of Java class libraries.

With Professor Mughal, he is co-author of Java Som Forste Programmringssprak. char c5 = `iface`; is incorrect because it appears to be a Unicode representation (note the backslash), but starts with `i` and not `u`.