The purpose of the Java transformation is to convert Platform-Independent Model (PIM) elements to language-specific Java Class elements. The transformation converts the PIM model types to Java types and creates encapsulation according to Enterprise Architect's options for creating properties from Java attributes; that is, producing the getters and setters according to the rules you have defined. Notice that the public attributes in the PIM are converted to private attributes in the PSM.
You set the code generation options for Java code generation on the Java Specifications page of the Options dialog.
The Platform-Independent Model (PIM):
After transformation becomes the PSM: