Create TreeSetTest2.java

Author: apoorvaa30

Collections/TreeSetTest2.java

@@ -0,0 +1,56 @@
+//version 11.1
+
+//uses Comparator
+
+import java.util.*;
+
+class MarksSort implements Comparator
+{
+	public int compare(Object ob1,Object ob2)
+	{
+		Student st1=(Student)ob1;
+		Student st2=(Student)ob2;
+		return(st1.marks - st2.marks);
+	}
+}
+class RollnoSort implements Comparator
+{
+	public int compare(Object ob1 , Object ob2)
+	{
+		Student st1=(Student)ob1;
+		Student st2=(Student)ob2;
+		return(st1.rollno - st2.rollno);
+	}
+}
+class Student
+{
+	int rollno,marks;
+	String name;
+	Student(String name ,int rollno , int marks)
+	{
+		this.name=name;
+		this.rollno=rollno;
+		this.marks=marks;
+	}
+	public String toString()
+	{
+		return(name+"   "+rollno+"   "+marks);
+	}
+}
+class TreeSetTest2
+{
+	public static void main(String s[])
+	{
+		TreeSet ts=new TreeSet();
+		ts.add(new Student("abc",103,86));
+		ts.add(new Student("xyz",101,45));
+		ts.add(new Student("abc",104,95));
+		ts.add(new Student("hij",102,75));
+
+		Iterator itr=ts.iterator();
+		while(itr.hasNext())
+		{
+			System.out.println(itr.next());
+		}	
+	}
+}