ask watch prgram java

Code:

 import java.util.Scanner;

public class jam{
	public static void main(String[]args){
		
		int jm,mnt,dtik,dtik2;
		
		
		Scanner wkt = new Scanner(System.in);
		System.out.print("jam :");
		jm=wkt.nextInt();
		System.out.print("menit:");
		mnt=wkt.nextInt();
		System.out.print("detik:");
		dtik=wkt.nextInt();
		System.out.print("detik2:");
		dtik2=wkt.nextInt();
		
		
		if (dtik + dtik2 >59){
			dtik=dtik%60;
			mnt=mnt+(dtik2/60);
		}
			
		if (mnt>59){
		jm=jm+(mnt/60);
		mnt=mnt%60;
		}
		
		if(jm>23){
			jm=00;
			
		System.out.println("jam :" +jm+":"+mnt+":"+dtik+":"+dtik2);
		
		}
	}
}

how this program could running when we enter

jam 10, menit 59, detik1 59, detik2 1

and result must 11:00:00,

jam 10, menit 58, detik1 52, detik2 3
and result must 10:58:55

 

Is this what you wanted?

Code:

		if (dtik + dtik2 >59){
			dtik=dtik%60;
			mnt=mnt+Math.floor(dtik2/60);
		}
			
		if (mnt>59){
		jm=jm+Math.floor(mnt/60);
		mnt=mnt%60;
		}

also, add at the top:
import java.lang.Math;

 

Unfortunately I'm not familiar with Java, but ain't there something like a calendar class that supports addition and subtraction of specific fields?

 

Yes, java.util.Calendar has the add method, which can add seconds to the time the object represents, as the original code does. This could look like

Code:

import java.util.Calendar;
import java.util.Scanner;

public class jam{
	public static void main(String[]args){
		
		Scanner wkt = new Scanner(System.in);
		Calendar time=new Calendar();
		System.out.print("jam :");
		time.set(Calendar.HOUR_OF_DAY,wkt.nextInt());
		System.out.print("menit:");
		time.set(Calendar.MINUTE,wkt.nextInt());
		System.out.print("detik:");
		time.set(Calendar.SECOND,wkt.nextInt());
		System.out.print("detik2:");
		time.add(Calendar.SECOND,wkt.nextInt());