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| No. | Answer | Remark | |
|---|---|---|---|
| 1 | b | Prints: BCD | The index for the first element of an array is zero so the first argument printed by this program is the second argument on the command line following the name of the class. |
| 2 | g | None of the above | Section 12.1.4 of the Java Language Specification requires that the main method must accept a single argument that is an array of components of type String. In each of the three class declarations, the single argument is indeed an array of components of type String. Please note that the square brackets within an array declaration may appear as part of the type or part of the declarator (i.e. array name). |
| 3 | d e f | An attempt to run GRC7 from the command line fails. An attempt to run GRC8 from the command line fails. An attempt to run GRC9 from the command line fails. | Section 12.1.4 of the JLS requires the main method to be declared static. In this example, each of the three main methods are not declared static. The result is an error at run-time. |
| 4 | e f | An attempt to run GRC2 from the command line fails. An attempt to run GRC3 from the command line fails. | Section 12.1.4 of the JLS requires the main method to be declared public. The main methods of GRC2 and GRC3 are not declared public and can not be invoked from the command line using a JVM that is compliant with section 12.1.4. Not every JVM enforces the rule. Even so, for the purposes of the SCJP exam, the main method should be declared as required by the JLS. |