Need solution!

Question

Hi!
Q1: what is heap,stack in java?

Q2:
String s1="Hello";
String s2 = new String(s1);
System.out.print(s1==s2);
How output is false

Q3: does anyone share about all kinds of exception in java?

Answer 1

A1: Have you looked it up? Have you googled it?

A2: The equals operator == compares equality of instances, not of content/value, hence false. The 2 strings have the same value but are different instances of strings.

A3: Have you looked it up? Have you googled it?

Answer 2

Lisa dear mam, when someone share their practical Knowledge then it always easy for me to learn something new something different. That's why i posted those questions🙄.

Answer 3

1
https://www.baeldung.com/java-stack-heap
2
https://www.baeldung.com/java-equals-method-operator-difference
3
https://www.baeldung.com/java-exceptions