引数をダンプするダミー

DummyChan.java

package com.example;

import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import java.awt.Container;

@SuppressWarnings("serial")
public class DummyChan extends JFrame{

	DummyChan(String[] args){
	    JEditorPane editor = new JEditorPane();
	    StringBuilder sb = new StringBuilder();
		sb.append(String.format("num of args=%1d\n", args.length));
	    for (int i = 0; i < args.length; i++)
	    {
	    	sb.append(String.format("[%1s]%2s\n", i, args[i]));
	    }
	    editor.setText(sb.toString());
	    editor.setCaretPosition(sb.length());

	    Container pane = getContentPane();
	    JScrollPane sc = new JScrollPane(editor);
	    pane.add(sc);
  }

	/**
	 * @param args
	 */
	public static void main(String[] args) {
	    DummyChan f = new DummyChan(args);
	    f.setBounds(100, 100, 300, 250);
	    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	    f.setTitle("ダミーchan");
	    f.setVisible(true);
	}

}

DummyChan2.java

package com.example;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class DummyChan2 {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {

		System.err.printf("num of args=%1d\n", args.length);
		for (int i = 0; i < args.length; i++)
		{
			System.err.printf("[%1s]%2s\n", i, args[i]);
		}
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		for(;;)
		{
			String t = br.readLine();
			if (t == null)
			{
				break;
			}
			
			System.out.println(t);
			
		}
		
	}

}