私はJavaを学び、使い始めたばかりです。簡単なチケットプログラムを作成してみました：
import java.util.Scanner;
public class First {
public static void main(String[] args) {
String name;
int v_tickets, g_tickets;
double vip=1000.00, gen=500.00, total;
Scanner in=new Scanner(System.in);
System.out.printf("Enter your name");
name = in.next();
System.out.printf("How many VIP tickets do you want?");
v_tickets = in.nextInt();
System.out.printf("How many general Tickets do you want?");
g_tickets = in.nextInt();
total = (v_tickets*vip)+(g_tickets*gen);
System.out.printf("Receipt\n Name: %d\n %d VIP %6f\n %d General %6f\n Total %6f",name,v_tickets,v_tickets*vip,g_tickets,g_tickets*gen,total);
} //end main
} //end program
しかし、私はこのエラーメッセージを受け取り続けます:
--------------------Configuration: <Default>--------------------
Usage: java [-options] class [args...]
(to execute a class)
or java [-options] -jar jarfile [args...]
(to execute a jar file)
where options include:
-d32 use a 32-bit data model if available
-d64 use a 64-bit data model if available
-server to select the "server" VM
-hotspot is a synonym for the "server" VM [deprecated]
The default VM is server.
-cp <class search path of directories and zip/jar files>
-classpath <class search path of directories and zip/jar files>
A ; separated list of directories, JAR archives,
and ZIP archives to search for class files.
-D<name>=<value>
set a system property
-verbose:[class|gc|jni]
enable verbose output
-version print product version and exit
-version:<value>
require the specified version to run
-showversion print product version and continue
-jre-restrict-search | -no-jre-restrict-search
include/exclude user private JREs in the version search
-? -help print this help message
-X print help on non-standard options
-ea[:<packagename>...|:<classname>]
-enableassertions[:<packagename>...|:<classname>]
enable assertions with specified granularity
-da[:<packagename>...|:<classname>]
-disableassertions[:<packagename>...|:<classname>]
disable assertions with specified granularity
-esa | -enablesystemassertions
enable system assertions
-dsa | -disablesystemassertions
disable system assertions
-agentlib:<libname>[=<options>]
load native agent library <libname>, e.g. -agentlib:hprof
see also, -agentlib:jdwp=help and -agentlib:hprof=help
-agentpath:<pathname>[=<options>]
load native agent library by full pathname
-javaagent:<jarpath>[=<options>]
load Java programming language agent, see java.lang.instrument
-splash:<imagepath>
show splash screen with specified image
See http://www.oracle.com/technetwork/java/javase/documentation/index.html for more details.
Process completed.
JCreator を使用していますが、[Build Output] の下に [Process Completed] と表示され、エラーは表示されません。しかし、上記のエラーは、「一般出力」の下にあるものです。これで何か助けていただければ幸いです。覚えておいてください。私はこれに非常に慣れていません。