Question 7 Analyze the following code.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Question 7
Analyze the following code.
// Program 1:
public class Test{
public static void main(String[] args) {
Object a1 = new A0);
Object a 2 = new A0);
System.out.println(a1.equals(a2));
}
}
class A {
int x;
public boolean equals(Object a) {
= ((A)a).x;
return this.x ==
}
}
// Program 2
public class Test{
public static void main(String[] args) {
Object a 1 = new A0);
Object a 2 = new A0);
System.out.println(a1.equals(a2));
}
class A {
int x;
public boolean equals(A a) {
return this.x == a.x;
}
}
Program 1 displays true and Program 2 displays true
Program 1 displays false and Program 2 displays true
Program 1 displays true and Program 2 displays false
O Program 1 displays false and Program 2 displays false
Transcribed Image Text:Question 7 Analyze the following code. // Program 1: public class Test{ public static void main(String[] args) { Object a1 = new A0); Object a 2 = new A0); System.out.println(a1.equals(a2)); } } class A { int x; public boolean equals(Object a) { = ((A)a).x; return this.x == } } // Program 2 public class Test{ public static void main(String[] args) { Object a 1 = new A0); Object a 2 = new A0); System.out.println(a1.equals(a2)); } class A { int x; public boolean equals(A a) { return this.x == a.x; } } Program 1 displays true and Program 2 displays true Program 1 displays false and Program 2 displays true Program 1 displays true and Program 2 displays false O Program 1 displays false and Program 2 displays false
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