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Class Declaration.
As Java source file name and top-level public class name MUST be same, the following java code must reside in file named "Test.java" for successful compilation.
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public class Test { // top-level public class declaration. |
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// class definition of Test class
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} |
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class SomeHelperClass { // top-level class declaration. |
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// class definition of SomeHelperClass
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} |
There can be only one top-level public class in any java source file. Hence, the following code will fail to compile.
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public class Test { // top-level public class declaration. |
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// class definition of Test class
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} |
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public class SomeHelperClass { // another top-level public class declaration. |
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// class definition of SomeHelperClass
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} |
Top-level public class may not be present at all in java
source file. In such a case, the name of the java source
file can be any valid file name. After compilation, the
class file for each top-level class is created.
The following code is perfectly valid.
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class Test { // top-level class declaration. |
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// class definition of Test class
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} |
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class SomeHelperClass { // another top-level class declaration. |
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// class definition of SomeHelperClass
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} |