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如何将此代码封装? 他们说封装是数据隐藏, 我知道如何做一些超载 和覆盖, 但不封装, 请帮我解决我的问题。 我不擅长Java编程, 提前谢谢!如何在java中封装代码
公共类ATM {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int bal = 1000;
int balance =+ bal;
System.out.println("===ATM Simulator===");
System.out.println("\n[B] Balance");
System.out.println("[W] Withdraw");
System.out.println("[D] Deposit");
System.out.println("[E] Exit");
do{
System.out.println("\nChoose Your Transaction:");
String trans = input.next();
try {
if(trans.equalsIgnoreCase("W"))
{
System.out.println("Enter the Amount to Withdraw: [1000,500,200,100]");
int wdraw = input.nextInt();
int withd = wdraw;
int charge = 10;
if (withd%100==0)
{
balance = balance - withd - charge;
System.out.println("Your current balance is now: "+balance);
}
else
{
System.out.println("Value Not in Range!");
}
}
if(trans.equalsIgnoreCase("D"))
{
System.out.println("Enter the Amount to Deposit:");
int deposit = input.nextInt();
balance = balance + deposit;
System.out.println("Your current balance is now: "+balance);
}
if(trans.equalsIgnoreCase("B"))
{
System.out.println("Your Current Balance is: "+balance);
}
if(trans.equalsIgnoreCase("E"))
{
System.out.println("Transaction Ended!\nThank you!");
System.exit(0);
}
}
catch (Exception e)
{
System.out.println("Invalid Input!");
}
}
while (balance>=200);
}
}
只读,什么封装是:http:///en.wikipedia.org/wiki/Encapsulation_%28object-oriented_programming%29 – bobbel