[Spark Asia Pacific Research Institute Series] the path to spark practice-Chapter 1 building a spark cluster (step 4) (5)

Modify the source code of our "firstscalaapp" to the following:

Right-click "firstscalaapp" and choose "Run Scala console". The following message is displayed:

This is because we have not set the JDK path for Java. Click "OK" to go to the following view:

In this case, select the "project" option on the left:

In this case, we select "new" of "No SDK" to select the following primary View:

Click the JDK option:

Select the JDK directory we installed earlier:

Click "OK"

Click OK:

Click the following view in the code area:

Run 'firstscalaapp' to run the program:

First, running Scala is slow, as shown in the running result:

"Hello Scala!" is printed successfully !" This string.

This indicates that the program runs successfully.

 

Step 5: If we want to use a cool black background, you can

File-> Settings-> appearance-> themeSelect darcula:

 

 

[Spark Asia Pacific Research Institute Series] the path to spark practice-Chapter 1 building a spark cluster (step 4) (5)