Javaサンプル(テーブル表示)

//Sample1a.java
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
public class Sample1a {
  private static final String window_title = "テーブル表示";
  private static final int locateX = 50;
  private static final int locateY = 50;
  private static final int window_width = 320;
  private static final int window_height = 160;
  private static final int table_width = 300;
  private static final int table_height = 120;
  private static final int row_height = 20;
  Object[] colNames = { "名前", "材質", "サイズ", "色", "判定基準" };
  Object[][] rowData = { 
      { "A01", "布", "大", "白", "柔らかさ" },
      { "K01", "糸", "細", "赤", "強度" }, 
      { "U01", "紙", "中", "黄", "安価" },
      { "S01", "紐", "中", "黒", "上質" }, };
  // 主処理
  public static void main(final String args[]) {
    final Sample1a sample = new Sample1a();
  }
  // コンストラクタ
  public Sample1a() {
    final JFrame f = new JFrame(Sample1a.window_title);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    final JTable t = new JTable(this.rowData, this.colNames);
    t.setRowHeight(Sample1a.row_height);
    t.setGridColor(Color.gray);
    final JScrollPane sp = new JScrollPane();
    sp.getViewport().setView(t);
    sp.setPreferredSize(new Dimension(Sample1a.table_width,
        Sample1a.table_height));
    final JPanel p = new JPanel();
    p.add(sp);
    f.getContentPane().add(p, BorderLayout.CENTER);
    f.setBounds(Sample1a.locateX, Sample1a.locateY, Sample1a.window_width,
        Sample1a.window_height);
    f.setVisible(true);
  }
}