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Prepare the library for use

Once you have downloaded the zip file, you will need to extract the folder named bookClasses from the zip file and store it somewhere on your computer's disk.

Library documentation

When you examine the contents of the bookClasses folder, you will see that in addition to source code and compiled class files for thelibrary, the folder also contains javadoc documentation for the library in afolder named doc and some other material as well. Go to the doc folder and open the file named index.html in your browser to view the documentation.

Put the library on the classpath

You will need to put the path to the bookClasses folder on your classpath in order to incorporate classes from the library into yourprograms.

Figure 4 . Putting the library on the classpath.
del *.class javac -cp .;M:\bookClasses *.javajava -cp .;M:\bookClasses Prob01

Figure 4 shows three commands that you can execute at a Windows command prompt to

  • Delete the class files from the current folder or current directory -- Google current directory if you don't recognize the term,
  • Compile the source-code files in the current folder , and
  • Execute the compiled version of a program named Prob01 in the current folder

The commands shown in Figure 4 assume that the bookClasses folder is in the root directory on the M-drive. The bookClasses folder will likely be in a different location on your computer. They also assume thatyou are compiling and running a program having its main method in a class named Prob01 in a file named Prob01.java .

Be sure to include the period and the semicolon shown before the M in Figure 4 . This tells the Java compiler and the Java Virtual Machine to search first in the current folder before searching elsewhere on the disk for the required files.

You can also put the three commands in a batch file and run the batch file to avoid having to type the three commands each time you need to compile and runthe program. In that case, you should add a pause command following the other three commands.

Note that this batch file must be placed in the same folder that contains the file named Prob01.java , and that folder must be your "current directory. DO NOT attempt to execute the commands shown in Figure 4 from inside the bookClasses folder."

If you are using an IDE such as DrJava, JCreator, or JGrasp, see the instructions for the IDE to learn how to set the classpath in the IDE.

Two versions of Hello World

It is often useful to have the code for a simple program to test your system. This section presents two versions of the classical Hello World program. The first version is a simple text version that doesn't use Ericson's library.This version can be used to confirm that the Java Development Kit (JDK) is properly installed on your computer.

The second version is a graphic version that does require Ericson's library.This version can be used to confirm proper installation and use of the library.

A text version of Hello World

The simple program shown in Listing 1 causes the words Text Hello World to be displayed on the standard output device when the program is compiled andexecuted.

Questions & Answers

A golfer on a fairway is 70 m away from the green, which sits below the level of the fairway by 20 m. If the golfer hits the ball at an angle of 40° with an initial speed of 20 m/s, how close to the green does she come?
Aislinn Reply
cm
tijani
what is titration
John Reply
what is physics
Siyaka Reply
A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance
Jude Reply
Can you compute that for me. Ty
Jude
what is the dimension formula of energy?
David Reply
what is viscosity?
David
what is inorganic
emma Reply
what is chemistry
Youesf Reply
what is inorganic
emma
Chemistry is a branch of science that deals with the study of matter,it composition,it structure and the changes it undergoes
Adjei
please, I'm a physics student and I need help in physics
Adjanou
chemistry could also be understood like the sexual attraction/repulsion of the male and female elements. the reaction varies depending on the energy differences of each given gender. + masculine -female.
Pedro
A ball is thrown straight up.it passes a 2.0m high window 7.50 m off the ground on it path up and takes 1.30 s to go past the window.what was the ball initial velocity
Krampah Reply
2. A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (0.20) at constant velocity by a force directed 25° above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work.
Sahid Reply
you have been hired as an espert witness in a court case involving an automobile accident. the accident involved car A of mass 1500kg which crashed into stationary car B of mass 1100kg. the driver of car A applied his brakes 15 m before he skidded and crashed into car B. after the collision, car A s
Samuel Reply
can someone explain to me, an ignorant high school student, why the trend of the graph doesn't follow the fact that the higher frequency a sound wave is, the more power it is, hence, making me think the phons output would follow this general trend?
Joseph Reply
Nevermind i just realied that the graph is the phons output for a person with normal hearing and not just the phons output of the sound waves power, I should read the entire thing next time
Joseph
Follow up question, does anyone know where I can find a graph that accuretly depicts the actual relative "power" output of sound over its frequency instead of just humans hearing
Joseph
"Generation of electrical energy from sound energy | IEEE Conference Publication | IEEE Xplore" ***ieeexplore.ieee.org/document/7150687?reload=true
Ryan
what's motion
Maurice Reply
what are the types of wave
Maurice
answer
Magreth
progressive wave
Magreth
hello friend how are you
Muhammad Reply
fine, how about you?
Mohammed
hi
Mujahid
A string is 3.00 m long with a mass of 5.00 g. The string is held taut with a tension of 500.00 N applied to the string. A pulse is sent down the string. How long does it take the pulse to travel the 3.00 m of the string?
yasuo Reply
Who can show me the full solution in this problem?
Reofrir Reply
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Source:  OpenStax, Object-oriented programming (oop) with java. OpenStax CNX. Jun 29, 2016 Download for free at https://legacy.cnx.org/content/col11441/1.201
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