How can I read txt files in java program??

My code:

Code :

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import java.io.*;
 
public class TV {
 
	public static void main(String[] args) throws IOException {
 
		String fileInput=("TV.txt");
 
		BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
		if (args.length==1) 
			fileInput=new String(args[0]);{
	//If TV.txt doesn't exist, create it!
 
			PrintWriter out=new PrintWriter(new FileWriter("TV.txt"));
 
			out.println(0);
 
			out.close();
 
		}
 
		int menu,listsize=0;
 
		String[] name=new String[500];
 
		int[] day=new int[500];
 
		String[] time=new String[500];
 
		do {
 
			System.out.println("1. Add a TV Show\n2. Modify TV Show\n3. Delete TV Show\n4. Sort TV Shows\n5. Show all TV Shows\n6. Exit\n7. Save TV Shows\n8. Load TV Shows\nWhat is your choice?");
 
			menu=Integer.valueOf(in.readLine()).intValue();
 
			if (menu==1) {
 
				System.out.print("Enter a show name: ");
	//read the data
 
				name[listsize]=in.readLine();
 
				System.out.print("Which day? (0 for Sunday, 1 for Monday, etc.) ");
 
				day[listsize]=Integer.valueOf(in.readLine()).intValue();
 
				if (day[listsize]==7) day[listsize]=0;
	//auto correct
 
				System.out.print("Enter the show time (24hr format) : ");
 
				time[listsize++]=in.readLine();
 
			}
 else if (menu==2) {
 
				System.out.print("Enter the show name: ");
 
				String str=in.readLine();
 
				int x;
 
				for (x=0;x<listsize;x++)
 
					if (str.equals(name[x]))
 
						break;
 
				if (x==listsize) {
 
					System.out.println("Not found");
 
					continue;
 
				}
 
				System.out.print("Enter the new name: ");
 
				name[x]=in.readLine();
 
				System.out.print("Which day? (0 for Sunday, 1 for Monday, etc.) ");
 
				day[x]=Integer.valueOf(in.readLine()).intValue();
 
				if (day[x]==7) day[x]=0;
	//auto correct
 
				System.out.print("Enter the show time (24hr format) : ");
 
				time[x]=in.readLine();
 
				System.out.print("x="+x);
 
			}
 else if (menu==3) {
 
				System.out.print("Enter the show name: ");
 
				String str=in.readLine();
 
				int x;
 
				for (x=0;x<listsize;x++)
 
					if (str.equals(name[x]))
 
						break;
 
				if (x==listsize) {
 
					System.out.println("Not found");
 
					continue;
 
				}
 
				for (int y=x;y<listsize;y++) {
 
					name[y]=name[y+1];
 
					day[y]=day[y+1];
 
					time[y]=time[y+1];
 
				}
 
				System.out.println("Removed");
 
				listsize--;
 
			}
 else if (menu==4) {
 
				System.out.println("Which way do you want to sort?\n1. name\n2. day\n3. time");
 
				int way=Integer.valueOf(in.readLine()).intValue();
 
				if (way==1) {
 
					for (int x=0;x<listsize;x++) {
	//sort
 
						int smallest=x;
 
						for (int y=x;y<listsize;y++)
 
							if (name[y].compareTo(name[smallest])<0)
 
								smallest=y;
 
						String tmp=name[x];
	//Swap
 
						name[x]=name[smallest];
 
						name[smallest]=tmp;
 
						tmp=time[x];
 
						time[x]=time[smallest];
 
						time[smallest]=tmp;
 
						int t=day[x];
 
						day[x]=day[smallest];
 
						day[smallest]=t;
 
					}
 
				}
 else if (way==2) {
 
					for (int x=0;x<listsize;x++) {
	//sort
 
						int smallest=x;
 
						for (int y=x;y<listsize;y++)
 
							if ((day[y]<day[smallest]) || ((day[y]==day[smallest])&&(name[y].compareTo(name[smallest])<0)))
 
								smallest=y;
 
						String tmp=name[x];
	//Swap
						name[x]=name[smallest];
 
						name[smallest]=tmp;
 
						tmp=time[x];
 
						time[x]=time[smallest];
 
						time[smallest]=tmp;
 
						int t=day[x];
 
						day[x]=day[smallest];
 
						day[smallest]=t;
 
					}
 
				} else if (way==3) {
 
					for (int x=0;x<listsize;x++) {
	//sort
 
						int smallest=x;
 
					for (int y=x;y<listsize;y++)
 
							if ((time[y].compareTo(time[smallest])<0) || ((time[y].compareTo(time[smallest])==0)&&(name[y].compareTo(name[smallest])<0)))
 
								smallest=y;
 
						String tmp=name[x];
	//Swap
						name[x]=name[smallest];
 
						name[smallest]=tmp;
 
						tmp=time[x];
 
						time[x]=time[smallest];
 
						time[smallest]=tmp;
 
						int t=day[x];
 
						day[x]=day[smallest];
 
						day[smallest]=t;
 
					}
 
				}
 
				System.out.println("Sorted");
 
			}
 else if (menu==5) {
 
				int[] showPerDay=new int[7];
 
				System.out.println("Name, Day, Time");
 
				for (int x=0;x<listsize;x++) {
 
					System.out.print(name[x]+", ");
 
					if (day[x]==0) System.out.print("Sun");
 
					else if (day[x]==1) System.out.print("Mon");
 
					else if (day[x]==2) System.out.print("Tue");
 
					else if (day[x]==3) System.out.print("Wed");
 
					else if (day[x]==4) System.out.print("Thu");
 
					else if (day[x]==5) System.out.print("Fri");
 
					else if (day[x]==6) System.out.print("Sat");
 
					System.out.println(", "+time[x]);
 
					showPerDay[day[x]]++;
 
				}
 
				System.out.println("There are "+showPerDay[0]+" per Sunday, "+showPerDay[1]+" per Monday, "+showPerDay[2]+" per Tuesday, "+showPerDay[3]+" per Wednesday, "+showPerDay[4]+" per Thursday, "+showPerDay[5]+" per Friday, "+showPerDay[6]+" per Saturday");
 
			}
 else if (menu==7) {
 
				PrintWriter out=new PrintWriter(new FileWriter("TV.txt"));
 
				out.println(listsize);
 
				for (int x=0;x<listsize;x++) {
 
					out.println(name[x]);
 
					out.println(day[x]);
 
					out.println(time[x]);
 
				}
 
				out.close();
 
				System.out.println("Done");
			}
 else if (menu==8) {
 
				BufferedReader inFile= new BufferedReader(new FileReader("TV.txt"));
 
				listsize =Integer.valueOf(inFile.readLine()).intValue();
 
				for (int y=0;y<listsize;y++) {
 
					name[y]=inFile.readLine();
 
					day[y]=Integer.valueOf(inFile.readLine()).intValue();
 
					time[y]=inFile.readLine();
 
				}
 
				System.out.println("Import "+listsize+" shows");
 
			}
 
			System.out.println();
 
		}
 while (menu!=6);
 
	}
 
}

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When I press "8", it said imported 0 shows. However, there are 7 shows in my TV.txt file. How can the java program read my TV.txt file properly?? Do I need to write anything specific in the txt file??

Here is my txt file:

Code :

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Cooking Mama, Mon, 08:00 
Gossip Boy, Tue, 22:00 
Be Home for Dinner, Wed, 20:00 
The Big Boy Show, Thurs, 21:30 
Crime Scene, Fri, 22:00 
Movie of the Week, Sat, 21:00 
Cooking with Jim, Sun, 09:00

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What I do is something like this. Of course, there are many ways to do the same thing :)

Code java:

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BufferedReader in = new BufferedReader(new FileReader("filename.txt", true));
String line;
while ((line = in.readLine()) != null) {
     //Do what you want with each line
}

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Quote:

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it said imported 0 shows

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What variable prints out the value of 0?
Where is that variable given a value? Add a println statement after every place the value of that variable changes to see if it is getting the correct value.

When I press 8 after I run the program, it should sow me how many TV shows are there since

Code :

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System.out.println("Import "+listsize+" shows");

---

However, it said 0....

Where should I put the code??

Where do you assign a value to listsize? Add the following statement immediately after every statement in the code that changes the value of listsize:
System.out.println("listsize="+listsize);

The value would be changed by an assignment statement where listsize is to the left of the = operator.