calculate duration of transaction Java

gistfile1.txt

/*
 * Created by dotrinh on 7/21/20 12:28 PM
 */

package jp.co.zoom.handyrecorder.tool;

/**
 * calculate duration of transaction
 *
 * Usage:
     * Start:
     *      TransactionTime transactionTime = new TransactionTime(System.currentTimeMillis());
     *
     * End:
     *      transactionTime.setEnd(System.currentTimeMillis());
     *
     * Check dusration:
     *      transactionTime.getDuration()
 */
public class TransactionTime {
    public long start;
    public long end;

    public TransactionTime() {
    }

    public TransactionTime(long start) {
        this.start = start;
    }

    public void setEnd(long end) {
        this.end = end;
    }

    /**
     * Get duration of transaction in millisecond
     * @return
     */
    public long getDuration() {
        if (this.start > 0 && this.end > 0) {
            return this.end - this.start;
        } else {
            return 0;
        }
    }
}