ImportantNotes.md

Important Notes related to JAVA

To read a file till EOF

To take input till the end of file is reached.

Scanner sc = new Scanner(System.in);
        while(sc.hasNext()){
            String s = new String(sc.nextLine());
        }

Exception in Java

Handling an exception in java.

    try{
             
    } catch (Exception e){
        // System.out.println("Exception : " + e.getMessage());
    }

Sorting in Java

STL to sort an array in java.

Arrays.sort(arr);

Exceptions

Throwing exceptions from a class.

public int power(int x, int y) throws Exception{
    if(x < 0 || y < 0){
        throw new Exception("n and p should be non-negative");
    }
    else{
        return (int)Math.pow(x,y);
    }
}