javaewah/example.java at master · RBecho/javaewah · GitHub

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import javaewah.EWAHCompressedBitmap;

public class example {
  public static void main(String[] args) {
    EWAHCompressedBitmap ewahBitmap1 = new EWAHCompressedBitmap();
    EWAHCompressedBitmap ewahBitmap2 = new EWAHCompressedBitmap();
    ewahBitmap1.set(0);
    ewahBitmap1.set(2);
    ewahBitmap1.set(64);
    ewahBitmap1.set(1 << 30);
    System.out.println("bitmap 1:");
    for (int k : ewahBitmap1)
      System.out.println(k);
    ewahBitmap2.set(1);
    ewahBitmap2.set(3);
    ewahBitmap2.set(64);
    ewahBitmap2.set(1 << 30);
    System.out.println("bitmap 2:");
    for (int k : ewahBitmap2)
      System.out.println(k);
    System.out.println();
    System.out.println("bitmap 1 OR bitmap 2:");
    EWAHCompressedBitmap orbitmap = ewahBitmap1.or(ewahBitmap2);
    for (int k : orbitmap)
      System.out.println(k);
    System.out.println("memory usage: " + orbitmap.sizeInBytes() + " bytes");
    System.out.println();
    System.out.println("bitmap 1 AND bitmap 2:");
    EWAHCompressedBitmap andbitmap = ewahBitmap1.and(ewahBitmap2);
    for (int k : andbitmap)
      System.out.println(k);
    System.out.println("memory usage: " + andbitmap.sizeInBytes() + " bytes");
    System.out.println("bitmap 1 XOR bitmap 2:");
    EWAHCompressedBitmap xorbitmap = ewahBitmap1.xor(ewahBitmap2);
    for (int k : xorbitmap)
      System.out.println(k);
    System.out.println("memory usage: " + andbitmap.sizeInBytes() + " bytes");

  }
}