Answer Posted / bhaskar reddy

There is a big reason behind that(java does not support
multiple inheritance). Please go through the following
example.

1. Assume that java is supporting multiple inheritance

class A {

void m1() {
// implement method
}
}

class B {
void m1() {
// implement method
}
}
//As for the assumption (1) the following code will compile

class C extends A,B {

public static void main( String s[]) {

C c = new C();
c.m1();
}
}

Note : In main method i am calling c.m1() method In this
situation which super class m1 method has to call (from A
or B) JVM will confuse.

So our assumtion(1) is wrong .

This is the reason why java does not support multple
inheritance through classes.

Note : This same cocept is applicable for classes.

how a programmer confirms that the data submitted has been succesfully inserted into the database(either oracle or my sql).. How a programmer confirm if there is any problem with the program he wrote for insertion... ANS:--- >executeupdate method is having boolean return type, if anything goes wrong in data insertion or data updation, it would return false. otherwise, if it successfully inserts data into the database, it would return true NOW HOW TO I CHECK IN MY DURING EXECUTION WHETHER IT RETURNS TRUE OR FALSE... WELL IT WILL DISPLAY ANY MESSAGE OR NOT

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