0923-----homework-----about exceptions, print abc by lambda and default function

package com.kai.li.HomeWork0923;

/**
  *work class for all the class
  */
public class HomeWork0923{

    /**
      *main fuction for all the text
      */
    public static void main(String[] args){    
        //questions of part 1 
        for(int i=0;i<4;i++){
            int  k;
            switch(i){
                case 0:
                    try{
                        int zero=0;
                        k=911/zero;
                        break;
                    }catch(ArithmeticException e){
                        System.out.println(e.getMessage());
                    }catch(Exception e){
                        e.printStackTrace();
                        System.out.println(e.getMessage());
                    }
                case 1:
                    try{
                        int[] b=null;
                        k = b[0];
                        break;
                    }catch(NullPointerException e){
                        System.out.println(e.getMessage());
                    }catch(Exception e){
                        e.printStackTrace();
                        System.out.println(e.getMessage());
                    }
                case 2:
                    try{
                        int c[]=new int[2];
                        k = c[9];
                        break;
                    }catch(ArrayIndexOutOfBoundsException e){
                        System.out.println(e.getMessage());
                    }catch(Exception e){
                        e.printStackTrace();
                        System.out.println(e.getMessage());
                    }
                case 3: 
                    try{
                        char ch = "abc".charAt(99);
                        break;
                    }catch(StringIndexOutOfBoundsException e){
                        System.out.println(e.getMessage());
                    }catch(Exception e){
                        e.printStackTrace();
                        System.out.println(e.getMessage());
                    }
            }
        }
        //questions of part 2
        Bank bank=new Bank(100);
        try{
            bank.withDrawal(150);
        }catch(InsufficientFundsException e){
            e.printStackTrace();
        }catch(NagativeFundsException e){
            e.printStackTrace();
        }
        bank=new Bank(100);
        try{
            bank.withDrawal(-15);
        }catch(NagativeFundsException e){
            e.printStackTrace();
        }catch(InsufficientFundsException e){
            e.printStackTrace();
        }
        //questions of part 3
        InterfaceX ix=()->{};
        ix.forl('a',26);
        ix.forl('A',26);    
    }
}
/**
  *this example is texted of exception
  */
//define the class bank ,it has some functions with text
class Bank{
    private double balance;
    Bank(){
        this.balance=0;
    }
    Bank(double balance){
        this.balance=balance;    
    }
    public double getBalance(){
        return this.balance;
    }
    public void withDrawal(double dAmount) throws InsufficientFundsException,NagativeFundsException{
        if(balance<dAmount)
            throw new InsufficientFundsException();
        if(dAmount<0)
            throw new NagativeFundsException();
        this.balance-=dAmount;
    }
}
//define the first exception by self
class InsufficientFundsException extends Exception{
    @Override
    public void printStackTrace(){
        super.printStackTrace();
        System.out.println("------------");
    }
}
//define the seconde exception by self 
class NagativeFundsException extends Exception{
    @Override
    public void printStackTrace(){
        super.printStackTrace();
        System.out.println("||||||||||||");
    }
}
/**
  *define a function interface
  *it is created for the lembda
  */
@FunctionalInterface
interface InterfaceX{
    void printLetter();
    default public void forl(int a,int b){
        for(int i=a;i<a+b;i++){
            System.out.print((char)i+" ");
        }
        System.out.println();    
    }
}