Java Programming Quiz

What is the correct syntax for initializing a variable named dog, of type String, with the value "BARK"?

• string dog = "BARK";

• dog = "BARK";

• "BARK" = String dog;

• int dog = "BARK";

Look at the following line of code: int[] myList = { 1, 2, 3, 4, 5 }; What is the proper way to access the array element with the value 3?

• myList["two"];

• MyList[2];

• myList[3];

• myList.3

Look at the following code: int i = 4; if (i <= 3) { i = 0; } else if (i <= 6) { i = 1; } else { i = 2; } What value would i be after this if then else statement?

• null

• 1

• 2

• 0

Look at the following function: public String reverseName( String name1, String name2 ) { String reversed = name2 + ", " + name1; return reversed; } Which is the proper way to call this function?

• reverseName()

• reverseName( "John", "Doe" )

• reverseName("John",100)

• ReverseName("John","Doe");

Look at the following code: public class TestClass { // section 1: private String testName; // section 2: public TestClass( String name, int i ) { this.testName = name; } // section 3: public void countToThree() { for (int m = 1; m <= 3; m++) { System.out.println( "Count is: " + m ); } } } What is defined in the denoted sections of this class?

• section 1: member variable section 2: constructor section 3: class method

• section 1: method section 2: constructor section 3: member variable

• Section 1: member variable. Section 2: constructor. Section 3: method.

• section 1: member variable section 2: class method section 3: method

As an established Java convention, what would it mean if the name of a variable was spelled in all uppercase?

• The variable is a constant, whose value should not change.

• the variable is contains a string that has all capital letters

• the variable is reserved for use by the Java environment, and you should not refer to it

• nothing. There is no such convention, and such a variable is like any other

Look at the following code: int errorInteger = 200; String comment; switch (errorInteger) { case 150: comment = "Javascript error."; break; case 240: comment = "Comment error."; break; case 300: comment = "Function error."; break; case 200: comment = "New error."; break; default: comment = "No error."; break; } System.out.println( comment ); What would be the resulting output from this code?

• javascript error

• comment error

• function error

• New error.

Look at the following class: public class Test { private String testName; public Test( String name ) { this.testName = name; } public setTestName( String name ) { this.testName = name; } } What would be the proper way to construct a Test object with member variable testName initially being "old", then later changed to "new"

• Test testObj = new Test( "old" ); testObj.setTestName( "new" );

• test testObj = new Test( "old" ); testObj.testName = "new";

• test testObj = new Test( "old" ); testObj[testName] = "new";

• test testName = "old"; testName = "new";

What would be the output of this code?: int age; age = age + 7; System.out.println( "My age is: " + age );

• this will not compile because you cannot add a string and integer value together

• my age is: 7

• This will not compile because age is not initialized with a value.

• my age is : null

How many times will "Hello" be printed out?: int i = 1; while (i <= 3) { System.out.println( "Hello" ); if ( i < 2 ) { System.out.println( "Hello" ); } i++; }

• 2

• 4

• 0

• 5