SavingsAccount构造函数

Question

如果我有类名SavesAccount，则有两个实例变量，例如private double balance和private double 感兴趣的是如何编写具有initialBalance和兴趣的构造函数？

Answer 1

public class SavingsAccount {

private double balance;
private double interest;

public SavingsAccount(double balance, double interest) {
this.balance = balance;
this.interest = interest;
}
}

Answer 2

喜欢这个吗？

public SavingsAccount(double balance, double interest) {
    this.balance = balance;
    this.interest = interest;
}

public SavingsAccount() {
    this(0d, 1d); // default is 0 for balance, 1 for interest rate
}