Java Coding Programs
1. Hello World
class HelloWorld{
public static void main(String[] args){
System.out.println("Hello World");
}
}
Output: Hello World
2. Even or Odd
class EvenOdd{
public static void main(String[] args){
int n = 10;
if(n % 2 == 0)
System.out.println("Even");
else
System.out.println("Odd");
}
}
Output: Even
3. Factorial
class Factorial{
public static void main(String[] args){
int n = 5;
int fact = 1;
for(int i=1;i<=n;i++){
fact = fact * i;
}
System.out.println(fact);
}
}
Output: 120
4. Reverse String
class ReverseString{
public static void main(String[] args){
String s = "Java";
String rev = "";
for(int i=s.length()-1;i>=0;i--){
rev = rev + s.charAt(i);
}
System.out.println(rev);
}
}
Output: avaJ
5. Palindrome
class Palindrome{
public static void main(String[] args){
String s = "madam";
String rev = "";
for(int i=s.length()-1;i>=0;i--){
rev = rev + s.charAt(i);
}
if(s.equals(rev))
System.out.println("Palindrome");
else
System.out.println("Not Palindrome");
}
}
Output: Palindrome
6. Largest Number in Array
class Largest{
public static void main(String[] args){
int arr[] = {10,50,20,40};
int max = arr[0];
for(int i=1;i max)
max = arr[i];
}
System.out.println(max);
}
}
Output: 50
Source: sureshtechlabs.com