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Thread: Exception in my code:Exception in thread "main" java.lang.NullPointerException

  1. #1
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    Default Exception in my code:Exception in thread "main" java.lang.NullPointerException

    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.text.DateFormat;
    import java.text.ParseException;
    import java.text.SimpleDateFormat;
    import java.util.Date;


    class check
    {
    public static void main(String args[]) throws IOException,Exception,ParseException
    {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    int testCases =Integer.parseInt(br.readLine());
    Date[] enterTime1=new Date[4];
    for(int i=0;i<testCases;i++)
    {

    String s=br.readLine();
    String s1=br.readLine();

    String [] splitStartTime=s.split("-");
    String [] splitStopTime=s1.split("-");
    enterTime1[0]=changeTime(splitStartTime[0]);
    enterTime1[1]=changeTime(splitStartTime[1]);
    enterTime1[2]=changeTime(splitStopTime[0]);
    enterTime1[3]=changeTime(splitStopTime[1]);

    boolean check=isOverlapping(enterTime1[0],enterTime1[1],enterTime1[2],enterTime1[3]);
    if(check==true)
    {
    System.out.println("will need a moderator");
    }
    else
    {
    System.out.println("Who need a moderator");
    }
    }
    }
    public static boolean isOverlapping(Date start1, Date end1, Date start2, Date end2)
    {
    return start1.before(end2) && start2.before(end1) && start1.before(end1);
    }
    public static Date changeTime(String time) throws ParseException
    {
    DateFormat sdf1 = new SimpleDateFormat("hh:mm");
    Date enterTime= sdf1.parse(time);
    return enterTime;
    }
    }


    Please help where i am going wrong


  2. #2
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    Default Re: Exception in my code:Exception in thread "main" java.lang.NullPointerException

    Welcome to the forum! Please read this topic to learn how to post code in code or highlight tags and other useful info for new members.

    Please post your code correctly per the above link. Also, when you're asking for help with an error, post it exactly and completely from what you're seeing. Copy the whole thing, the error and stack trace, and post it.

    --- Update ---

    Thread moved per OP request.

    Please edit your original post or add a new post that uses code tags and includes the full error message.

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