Summary of java error processing

import java.util.*;
public class Main {
    public static void main(String[] args) throws IOException {
        // Your code here!
        /*int a =0/0;
    String str="simizu";//If you set this to null, an exception will occur, but since it is an unchecked exception, you do not have to try it.
    int i = str.length();

    System.out.println(str + "Is" + i + "letter");
    //throw new StackOverflowError("StackOverflowError");Memory overflow You can't catch it here, you can't catch it if the server goes down in the first place
    throw new IOException("IOException"); //Check exception: Try is required. It's okay because it's thrown next to the method, but if it's not thrown by the method, try catch is required.


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