Java将Long类型转换为时分秒

    
    @Excel(name = "充电时间", width = 30)
    private Long chargeTime;
    private String chargeTimechargeTime;

    public String getChargeTimechargeTime() {
        if (chargeTime==null){
            return null;
        }
        //时
        Long hour = chargeTime / 60 / 60;
        //分
        Long minutes = chargeTime / 60 % 60;
        //秒
        Long remainingSeconds = chargeTime % 60;
        //判断时分秒是否小于10……
        if (hour < 10 && minutes < 10 && remainingSeconds < 10){
            chargeTimechargeTime = "0" + hour + ":" + "0" + minutes + ":" + "0" + remainingSeconds;
        }else if (hour < 10 && minutes < 10){
            chargeTimechargeTime = "0" + hour + ":" + "0" + minutes + ":" + remainingSeconds;
        }else if (hour < 10 && remainingSeconds < 10){
            chargeTimechargeTime = "0" + hour + ":" + minutes + ":" + "0" + remainingSeconds;
        }else if (minutes < 10 && remainingSeconds < 10){
            chargeTimechargeTime = hour + ":" + "0" + minutes + ":" + "0" + remainingSeconds;
        }else if (hour < 10){
            chargeTimechargeTime = "0" + hour + ":" + minutes + ":" + remainingSeconds;
        }else if (minutes < 10){
            chargeTimechargeTime = hour + ":" + "0" + minutes + ":" + remainingSeconds;
        }else if (remainingSeconds < 10){
            chargeTimechargeTime = hour + ":" + minutes + ":" + "0" + remainingSeconds;
        }else {
            chargeTimechargeTime = hour + ":" + minutes + ":" + remainingSeconds;
        }
        return chargeTimechargeTime;
    }

    public void setChargeTimechargeTime(String chargeTimechargeTime) {
        this.chargeTimechargeTime = chargeTimechargeTime;
    }