why this code is not working

Question

public class Program
{
public static void main(String[] args) {
int z = next(21,56);
System.out.print(z);
}
static int next(int x,int y){
if(x==y){
return 34;
}else if(x<30 && y==56) {
return 1000000;
}
}
}

Answer 1

Your function is missing one return statement when neither case is true:

public class Program
{
public static void main(String[] args) {
int z = next(21,56);
System.out.print(z);
}
static int next(int x,int y){
if(x==y){
return 34;
}else if(x<30 && y==56) {
return 1000000;
}else{
System.out.println("They dont fit first nor second case");
return -1;
}
}
}

Or like this:

public class Program
{
public static void main(String[] args) {
int z = next(21,56);
System.out.print(z);
}
static int next(int x,int y){
if(x==y){
return 34;
}else if(x<30 && y==56) {
return 1000000;
}

System.out.println("They dont fit first nor second case");
return -1;
}
}
}

So, if it passes both first and second case it will return -1