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24-25 CS1811: Object oriented programming I

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Match the following JavaFX concepts with their descriptions.

VBox

HBox

Label

Stage

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What is JavaFX?

A Java library to develop programs with a graphical user interface

A component of the Java standard library since Java 11

The latest version of the Java programming language

The only Java library to develop programs with a graphical user interface

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Suppose we have the following variables

int x = 1;
int y = 2;
boolean b = false;

Match the following expressions with their values.

!(x == y) && (b || y > x)

(b || x == 1)

b || !b

x == y && (b || y > x)

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Suppose we have the variables

int x = 5;
int y = 4;
int z = 10;

Match the following logical expressions with their values.

(x > y)

!(x > y)

(z <= y)

(x > y) && (z <= y)

(x > y) || (z <= y)

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Two's complement is...

...a method of representing negative integers in binary (0s and 1s).

✅

...a method of combining characters to form strings of text.

...the inversion of the number 2, that is 1/2.

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Match the following lines of Java code with the output they produce.

double x = 0.1;
double y = 0.2;
System.out.println(x + y);

System.out.println("123" + "456");

System.out.println(123 + 456);

int x = 1000000 * 1000000;
System.out.println(x);

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