Import files of the same hierarchy in Java

It seems that the idea of package is necessary.

It seems easy to think of package = directory.

Put the main .java file in a folder.


Put this at the beginning of where main () is located

package test1;

Then, ** ** in the same layer can be read without importing anything.

	void runSample() throws MyTest1Exception {
			throw new MyTest1Exception("Unique exception"); 



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