Can you list and describe the main methods of the Object class in Java?

Main methods of the Object class in Java, inherited by all objects:

• equals(Object obj) — compares the current object with another for equality. By default, compares references, but often overridden to compare contents.

• hashCode() — returns the hash code of the object, used in collections like HashMap, HashSet. When overriding equals, hashCode should also be overridden.

• toString() — returns a string representation of the object. By default, outputs the class name and hash code, often overridden for convenient display.

• clone() — creates and returns a copy of the object. Requires implementation of the Cloneable interface and is usually overridden.

• finalize() — called before garbage collection, used for resource release (deprecated method, not recommended for use).

• getClass() — returns the Class object describing the class of the object.

• wait(), notify(), notifyAll() — methods for thread work and synchronization.

Example of overriding equals and hashCode:

@Override
public boolean equals(Object obj) {
    if (this == obj) return true;
    if (obj == null || getClass() != obj.getClass()) return false;
    MyClass other = (MyClass) obj;
    return this.id == other.id;
}

@Override
public int hashCode() {
    return Objects.hash(id);
}