ExtUtil.java

public class ExtUtil {
	private ExtUtil() {
	}

	public static boolean isVideo(String filePath) {
		String ext = filePath.toLowerCase();
		return ext.endsWith(".mp4") || ext.endsWith(".avi") || ext.endsWith(".wmv") || ext.endsWith(".rmvb") || ext.endsWith(".mpg") || ext.endsWith(".mpeg") || ext.endsWith(".3gp");
	}

	public static boolean isImage(String filePath) {
		String ext = filePath.toLowerCase();
		return ext.endsWith(".jpg") || ext.endsWith(".jpeg") || ext.endsWith(".png") || ext.endsWith(".gif") || ext.endsWith(".bmp");
	}

	public static boolean isAudio(String filePath) {
		String ext = filePath.toLowerCase();
		return ext.endsWith(".mp3") || ext.endsWith(".wav") || ext.endsWith(".wma") || ext.endsWith(".amr") || ext.endsWith(".ogg");
	}

	public static boolean isPpt(String filePath) {
		String ext = filePath.toLowerCase();
		return ext.endsWith(".ppt") || ext.endsWith(".pptx");
	}

	public static boolean isWord(String filePath) {
		String ext = filePath.toLowerCase();
		return ext.endsWith(".doc") || ext.endsWith(".docx");
	}

	public static boolean isExcel(String filePath) {
		String ext = filePath.toLowerCase();
		return ext.endsWith(".xls") || ext.endsWith(".xlsx");
	}

	public static boolean isApk(String filePath) {
		return filePath.toLowerCase().endsWith(".apk");
	}

	public static boolean isPdf(String filePath) {
		return filePath.toLowerCase().endsWith(".pdf");
	}

	public static boolean isTxt(String filePath) {
		return filePath.toLowerCase().endsWith(".txt");
	}

	public static boolean isChm(String filePath) {
		return filePath.toLowerCase().endsWith(".chm");
	}
}