Java programming

Java programming

#1
Discuss with your classmates, the impact of Java from a personal, business, and societal perspective. How much do you interact with Java on a daily basis? Answer these questions during your discussion, and think of other questions to ask.

#2
When working with numbers, most of the time you use the primitive types in your code. For example:

int i = 30;
float gpa = 2.50f;
byte mask = 0xff;
There are, however, reasons to use objects in place of primitives, and the Java platform provides wrapper classes for each of the primitive data types. What are some reasons to use objects instead of primitive types?

#3
Here is the sample code for a possible implementation of a Bicycle class that illustrates inheritance: 

public class Bicycle {
// the Bicycle class has
// three fields
public int cadence;
public int gear;
public int speed;

// the Bicycle class has
// one constructor
public Bicycle(int startCadence,
int startSpeed,
int startGear) {
gear = startGear;
cadence = startCadence;
speed = startSpeed;
}

// the Bicycle class has
// four methods
public void setCadence(int newValue) {
cadence = newValue;
}

public void setGear(int newValue) {
gear = newValue;
}

public void applyBrake(int decrement) {
speed -= decrement;
}

public void speedUp(int increment) {
speed += increment;
}

// the Bicycle class has
// three fields
public int cadence;
public int gear;
public int speed;

// the Bicycle class has
// one constructor
public Bicycle(int startCadence,
int startSpeed,
int startGear) {
gear = startGear;
cadence = startCadence;
speed = startSpeed;
}

// the Bicycle class has
// four methods
public void setCadence(int newValue) {
cadence = newValue;
}

public void setGear(int newValue) {
gear = newValue;
}

public void applyBrake(int decrement) {
speed -= decrement;
}

public void speedUp(int increment) {
speed += increment;
}

}
Discuss with your classmates an example of an object or concept where the concept of inheritance can be utilized. Describe what can be used as the fields, constructor and methods. Address these questions during your discussion, and think of other questions to ask your classmates.

#4
Explain the importance of the inheritance hierarchy for Swing components.

#5
Explain an applet you would like to develop and describe what kind of GUIs you would create using Swing and Netbeans.

#6
There are two types of files and streams. Provide a definition of each type of file and stream and give an example of how each can be used in the development of an application. Address these questions during your discussion, and think of other questions to ask your classmates about their examples.

#7
Discuss with your classmates a plan to layout an XML document and discuss how you will utilize either attributes or elements to represent each of your data items. Address these questions during your discussion, and think of other questions to ask your classmates about their data layout.

#8
Discuss with your classmates a plan for a smart phone application. Describe what the application will do and tell your classmates why you would like to create the application. Will your application run multiple threads and what will each thread do in the application? Address these questions during your discussion, and think of other questions to ask your classmates about their data layout