Can anybody help me convert into java?

[E Baller]

#include <iostream>
using namespace std;
int main() {
int hourAmPm;
int minAmPm;
string amPm;
int hour24;

cin >> hourAmPm;
cin >> minAmPm;
cin >> amPm;

if ( (hourAmPm == 12) && (amPm == "am") ) { // Special case for first hour
hour24 = 0;
}
else if ( (amPm == "pm") && (hourAmPm != 12) ) { // Add 12 for 1 pm and higher (not for 12 pm).
hour24 = hourAmPm + 12; // Ex: 2 pm becomes 14
}
else { // must be 1 am to 11 am, so hour stays the same (e.g., 9 am stays 9 am
hour24 = hourAmPm;
}

if (hour24 < 10) { // Prepend a "0", such as 02:30
cout << "0";
}

cout << hour24 << ":";

if (minAmPm < 10) { // Prepend a "0", such as 12:01
cout << "0";
}

cout << minAmPm << endl;

return 0;
}

[Carey Brown]

What have you tried so far?

cin is done with Scanner in  Java
cout is done with System.out.print() in Java
str == "abc" is done using equals() in Java

[E Baller]

This is what I have so far does it seem right? Also I am getting an error on the scanner.nextInt() and the string amPm.

import java.util.Scanner;

public class main {
   public static void main(String[] args) {
      Scanner scnr = new Scanner(System.in);
int hourAmPm; 
int minAmPm; 
string amPm; 
int hour24; 

hourAMpm = scanner.nextInt();
minAmPm = scanner.nextInt(); 
hour24 = scanner.nextInt();

if ( (hourAmPm == 12) && (amPm == "am") ) { // Special case for first hour
hour24 = 0;
}
else if ( (amPm == "pm") && (hourAmPm != 12) ) { // Add 12 for 1 pm and higher (not for 12 pm).
hour24 = hourAmPm + 12; // Ex: 2 pm becomes 14
}
else { // must be 1 am to 11 am, so hour stays the same (e.g., 9 am stays 9 am
hour24 = hourAmPm;
}

if (hour24 < 10) { // Prepend a "0", such as 02:30
System.out.print("0");
}

System.out.print(hour24 + ":");

if (minAmPm < 10) { // Prepend a "0", such as 12:01
System.out.print("0");
}

System.out.println(minAmPM < 10);

return 0;
}
}

}

[Carey Brown]

"hour24" is a variable used to calculate the output, so no input needed for it.
"amPm" variable does need input.

[Zachary Griggs]

amPm == "am"

In Java, String comparison must be done with the .equals method rather than the == operator, because the == operator compares addresses only, not contents

Also, it doesn't look like you are accepting an input value for "amPm" anywhere as you are in this C++ code:

cin >> amPm;

In Java, the main method has no return value ("void"), unlike C++ where you return an int.

[E Baller]

I am doing it right with the scanner.nextInt(); ?

[Carey Brown]

E Baller wrote:This is what I have so far does it seem right? Also I am getting an error on the scanner.nextInt() and the string amPm.

You named your Scanner variable "scnr".
You didn''t assign anything to amPm.
You are not using equals() to test amPm.

[Ron McLeod]

Also, in Java we have String rather than string.

[Carey Brown]

You can use printf() to do a formatted print. This saves you the trouble of having to prepend zeros. This would replace ALL your print statements.

System.out.printf( "%02d:%02d%n", hour24, minAmPm );

[E Baller]

Is this much better? When i try to run this program I am getting an error.

import java.util.Scanner;

public class main {
   public static void main(String[] args) {
      Scanner scnr = new Scanner(System.in);
int hoursAmPm; 
int minAmPm; 
String amPm; 
int hours24; 

hoursAmPm = scnr.nextInt();
minAmPm = scnr.nextInt(); 
amPm = scnr.nextLine(); 
hours24 = scnr.nextInt();

if ( (hoursAmPm == 12) && (amPm.equals("am") )) { // Special case for first hour
hours24 = 0;
}
else if ( (amPm.equals("pm")) && (hoursAmPm != 12) ) { // Add 12 for 1 pm and higher (not for 12 pm).
hours24 = hoursAmPm + 12; // Ex: 2 pm becomes 14
}
else { // must be 1 am to 11 am, so hour stays the same (e.g., 9 am stays 9 am
hours24 = hoursAmPm;
}

if (hours24 < 10) { // Prepend a "0", such as 02:30
System.out.print("0");
}

System.out.print(hours24 + ":");

if (minAmPm < 10) { // Prepend a "0", such as 12:01
System.out.print("0");
}

System.out.println(minAmPm < 10);

}
}