progressrenderer.java

下载管理器是基于HTTP1.1而建立的,支持断点续传.采用Java Swing创建了一个简单高效的GUI界面,具有一次下载多个文件的能力.

import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;

// This class renders a JProgressBar in a table cell.
class ProgressRenderer extends JProgressBar
  implements TableCellRenderer
{
  // Constructor for ProgressRenderer.
  public ProgressRenderer(int min, int max) {
    super(min, max);
  }

  /* Returns this JProgressBar as the renderer
     for the given table cell. */
  public Component getTableCellRendererComponent(
    JTable table, Object value, boolean isSelected,
    boolean hasFocus, int row, int column)
  {
    // Set JProgressBar's percent complete value.
    setValue((int) ((Float) value).floatValue());
    return this;
  }
}