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one exercise of 《Thinking In Java SE》
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本文导语: chapter 4,exercise 8 Create a class without a constructor, and then create an object of that class in main( ) to verify that the default constructor is automatically synthesized. Can you give me the code? | clas...
chapter 4,exercise 8
Create a class without a constructor, and then create an object of that class in main( ) to verify that the default constructor is automatically synthesized.
Can you give me the code?
Create a class without a constructor, and then create an object of that class in main( ) to verify that the default constructor is automatically synthesized.
Can you give me the code?
|
class ClassA {
public static void main(String args[]){
ClassA a = new ClassA();
System.out.println(a.toString());
}
}
一般类缺省继承 java.long.Object
public static void main(String args[]){
ClassA a = new ClassA();
System.out.println(a.toString());
}
}
一般类缺省继承 java.long.Object
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