Which declaration can be inserted at (1) without using a compilation error?
interface IConstants
{
int radius=42;
int side=69;
//(1) INSERT CODE HERE
}
Select the two correct answer.

(a)final double circumference= 2*Math.PI*radius;
(b)int total=total+radius+side;
(c)int AREA=radius*side;
(d)public static MAIN=15;
(e)protected int CODE = 31337;

public class Main{
public static void main (String[] args) {
int i=0;
int[] a={3,6};
a[i]=i=9;
System.out.println(i+" "+a[0]+" "+a[1]);
}
}

public class Main{
public static void main (String[] args) {
String s="Contenment!";
int middle=s.length()/2;
String n=s.substring(middle-1,middle+1);
System.out.println(s.lastIndexOf(n,middle));
}
}

Which statement are true?
A)The expression (1+2+"3") evaluates to the String "33".
B)The expression ("1"+2+3) evaluates to the String "15".
C)The expression (4+1.0f) evaluates to the float value 5.0f.
D)The expression (10/9) evaluates to the int value 1.
E)The expression ('a'+1) evaluates to the char value 'b'.

interface A{
public void aaa();
}
class AA implements A{
public void aaa(){
System.out.println("Hi");
}
}
class D extends AA{
public class Exa{
public void aaa(){
System.out.println("Wow");
}
public void main (String[] args) {
A a=new D();
a.aaa();
}
}
public void aaa(){
System.out.println("Bye");
}
}

public class Program
{
Integer funn(Integer a,Integer b){
if(b>a){
return b+funn(a+1,b-1);
}
else{
return a;
}
}
public static void main(String[] args) {
Program p=new Program();
System.out.println(p.funn(2,5));
}
}

UML Diagram Course – How to Design Databases and Systems
https://www.freecodecamp.org/news/uml-diagrams-full-course/

public class Program
{
static String getString(long... ls){
return "ONE";
}
static String getString(Long... ls){
return "TWO";
}
static String getString(Integer i1,Integer i2){
return "THREE";
}
static String getString(Long l1,Long l2){
return "FOUR";
}
static String getString(Number n1,Number n2){
return "FIVE";
}
public static void main(String[] args) {
System.out.println(getString((byte)5,(byte)10)+","+getString(5,10));
System.out.println(getString(5L,10)+","+getString(5L,10L));
}
}

JDK 17: The new features in Java 17
https://www.infoworld.com/article/3606833/jdk-17-the-new-features-in-java-17.html