add and complete Song class

src/main/java/sbu/javafx/Song.java

@@ -0,0 +1,53 @@
+package sbu.javafx;
+
+public class Song {
+    private String title;
+    private String artist;
+    private String duration;
+    private String filePath;
+
+    public Song(String title, String artist, String duration, String filePath)
+    {
+        this.filePath = filePath;
+        this.artist = artist;
+        this.duration = duration;
+        this.title = title;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getArtist() {
+        return artist;
+    }
+
+    public void setArtist(String artist) {
+        this.artist = artist;
+    }
+
+    public String getDuration() {
+        return duration;
+    }
+
+    public void setDuration(String duration) {
+        this.duration = duration;
+    }
+
+    public String getFilePath() {
+        return filePath;
+    }
+
+    public void setFilePath(String filePath) {
+        this.filePath = filePath;
+    }
+
+    public String getDisplayName()
+    {
+        return getTitle()+" - " + getArtist();
+    }
+}