The equals method that comes along java.lang.Object provides an equal method which does the following<\/p>\n
<pre>
\npublic boolean equals(Object o)
\n{
\nif(this == 0) return true;
\n}
\n<\/pre><\/p>\n
But the above implementation only for Integer, Boolean, Character and Other Wrapper classes because it is overridden.<\/p>\n
When we define our own class and define equals the below is how its going to be.<\/p>\n
<pre><\/p>\n
class mac
\n{
\nint Age;
\n}
\n<\/pre><\/p>\n
Now the below code does not give any output until equals method is overridden if you comment out \u00a0 objmac2 = objmac1;\u00a0\u00a0 \u00a0\u00a0\u00a0.<\/p>\n
<pre>
\nInteger num1 = new Integer(5);
\nInteger num2 = new Integer(5);<\/p>\n
mac objmac1 = new mac();
\nmac objmac2 = new mac();<\/p>\n
objmac2 = objmac1;<\/p>\n
objmac1.Age = 25;
\nobjmac2.Age = 25;<\/p>\n
if(objmac1 == objmac2)
\nSystem.out.println(“They are same”);<\/p>\n
if(objmac1.equals(objmac2))
\nSystem.out.println(“Objects are same”);<\/p>\n
<\/pre><\/p>\n
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The equals method that comes along java.lang.Object provides an equal method which does the following <pre> public boolean equals(Object o) { if(this == 0) return true; } <\/pre> But the above implementation only for Integer, Boolean, Character and Other Wrapper classes because it is overridden. When we define our own class and define equals the… Continue reading