add CommandLineParserTest

Author: junho85

README.md

@@ -1,2 +1,3 @@
 # java_study
 java study
+

src/main/java/CommandLineParserTest.java

@@ -0,0 +1,41 @@
+import org.apache.commons.cli.*;
+
+public class CommandLineParserTest {
+    public static void main(String[] args) throws ParseException {
+        Options options = new Options();
+
+        options.addOption(Option.builder().longOpt("host")
+                .desc("smtp server host")
+                .hasArg()
+                .build());
+
+        options.addOption(Option.builder().longOpt("port")
+                .desc("smtp server port")
+                .hasArg()
+                .build());
+
+        options.addOption(Option.builder().longOpt("from")
+                .desc("from address")
+                .hasArg()
+                .build());
+
+        options.addOption(Option.builder().longOpt("to")
+                .desc("to address")
+                .hasArg()
+                .build());
+
+        CommandLineParser parser = new DefaultParser();
+
+        CommandLine line = parser.parse(options, args);
+
+        String host = line.getOptionValue("host");
+        String port = line.getOptionValue("port");
+        String from = line.getOptionValue("from");
+        String to = line.getOptionValue("to");
+
+        System.out.println(host);
+        System.out.println(port);
+        System.out.println(from);
+        System.out.println(to);
+    }
+}