java - Java 中的简单重构(基础)

Question

我有这两个用于创建 BankAccount 的构造函数

    public BankAccount(int accountNumber , double balance) {
        // TODO Auto-generated constructor stub
        this.accountNumber = accountNumber;
        this.balance = balance;         
        System.out.println(this.accountNumber+"    "+this.balance);         
    }

    public BankAccount(int accountNumber) {
        // TODO Auto-generated constructor stub
        this.accountNumber = accountNumber;
        this.balance = 0;

        System.out.println(this.accountNumber+"    "+this.balance);
    }

我想重构它并符合DRY(不要重复自己)原则。我写了这个但是它引发了一个错误...请帮助...

public BankAccount(int accountNumber) {
        // TODO Auto-generated constructor stub
        BankAccount(accountNumber,0.0);
    }
        public BankAccount(int accountNumber , double balance) {
        // TODO Auto-generated constructor stub
        this.accountNumber = accountNumber;
        this.balance = balance;

        System.out.println(this.accountNumber+"    "+this.balance);

    }

Answer 1

使用这个

public BankAccount(int accountNumber) {
    this(accountNumber,0.0);
}