Quiz Methods Pre-test

A Java class can have multiple methods called “main”, but with formal parameters of different types.

True

pwd is a command telling bash to display the path to the current working directory.

True

The return type of a non-void method must match, or be compatible with, the type of any expression appearing in any return statement in that method.

True

A non-void method must contain at least one return

True

A void method must contain at least one return statement.

False

The body of a method contains the executable part of that method.

True

env is commonly used as the name of the third parameter of a main function in C and gives access to the environment variables.

True

When calling a Java method, an actual parameter needs to be supplied for every formal parameter.

True

A void method in a Java program does not return a value.

True

int\[\] a,b\[\],c; is equivalent with: int a\[\], b\[\]\[\],c\[\];

True

int\[\] a,b\[\],c; is equivalent with: int a\[\], b\[\],c;

False

A while loop is classified as a pre-test loop.

True

A do-while loop is classified as a pre-test loop.

False

Variables in Java can be declared in a body of some method, as formal parameter, or in a class outside methods.

True

The row i of a 2D ragged array of integers can be emptied with row\[i\] = new int\[0\]

True

A Java program may have a single method main(String\[\]) in a class.

True

The return type of a non-void method can be String.

True

Execution begins in the method main(String\[\]) when there are no initialized static variables.

True

Execution begins with the initialization of static variables, before the method main(String\[\]) when there are no initialized static variables.

True

System.in is a static member encapsulating the opened standard input file of the process

True

The formal parameters for a method need not be of the same type.

True

The type of each actual parameter must match, or be compatible with, the type of the corresponding formal parameter.

True

After a method terminates, the memory allocated to non-static local variables is de-allocated on stack, while static variables remain in the global space.

True

The number of symbols that can be represented on k bits is 2^k.

True

A byte has 8 bits.

True

A byte has 16 bits.

False

A kilometer has 1000 meters

True

A megabyte is a million bytes.

True

A megabyte is a billion bytes.

False

A gigabit is a billion bits

True