1: package rope; 2: public class Rope { 3: public static int LENGTH = 5; 4: static { 5: LENGTH = 10; 6: } 7: public static void swing() { 8: System.out.print("swing "); 9: } 10: }
1: import rope.*; 2: import static rope.Rope.*; 3: public class Chimp { 4: public static void main(String[] args) { 5: Rope.swing(); 6: new Rope().swing(); 7: System.out.println(LENGTH); 8: } 9: }
❌ A. swing swing 5 ✅ B. swing swing 10 ❌ C. Compiler error on line 2 of Chimp. ❌ D. Compiler error on line 5 of Chimp. ❌ E. Compiler error on line 6 of Chimp. ❌ F. Compiler error on line 7 of Chimp.
Explanation: Rope runs line 3, setting LENGTH to 5, then immediately after runs the static initializer, which sets it to 10. Line 5 calls the static method normally and prints swing. Line 6 also calls the static method. Java allows calling a static method through an instance variable. Line 7 uses the static import on line 2 to reference LENGTH.
1: package rope; 2: public class Rope { 3: public static int LENGTH = 5; 4: static { 5: LENGTH = 10; 6: } 7: public static void swing() { 8: System.out.print("swing "); 9: } 10: }
1: import rope.*; 2: import static rope.Rope.*; 3: public class Chimp { 4: public static void main(String[] args) { 5: Rope.swing(); 6: new Rope().swing(); 7: System.out.println(LENGTH); 8: } 9: }
❌ A. swing swing 5 ✅ B. swing swing 10 ❌ C. Compiler error on line 2 of Chimp. ❌ D. Compiler error on line 5 of Chimp. ❌ E. Compiler error on line 6 of Chimp. ❌ F. Compiler error on line 7 of Chimp.
Explanation: Rope runs line 3, setting LENGTH to 5, then immediately after runs the static initializer, which sets it to 10. Line 5 calls the static method normally and prints swing. Line 6 also calls the static method. Java allows calling a static method through an instance variable. Line 7 uses the static import on line 2 to reference LENGTH.
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