Author Question: Analyze the following code:public class Test { public static void main(String[] args) {Object a1 = ... (Read 60 times)

captainjonesify · **on:** May 6, 2020

Analyze the following code:

public class Test {
public static void main(String[] args) {

Object a1 = new A();

Object a2 = new Object();

System.out.println(a1);

System.out.println(a2);

}
}

class A {
int x;

public String toString() {

return "A's x is " + x;

}
}

◦ When executing System.out.println(a2), the toString() method in the Object class is invoked.
◦ When executing System.out.println(a1), the toString() method in the A class is invoked.
◦ When executing System.out.println(a1), the toString() method in the Object class is invoked.
◦ The program cannot be compiled, because System.out.println(a1) is wrong and it should be replaced by System.out.println(a1.toString());

jennafosdick · **Reply #1 on:** May 6, 2020

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