java - How can I optimize this little piece of code -


i started java course , given assignment check if 2 triangles congruent based on values of vertices provided user. not allowed add in packages(except 1 did) nor allowed use loops. works fine there shorter more effecient solution?

import java.util.scanner; public class congruent {     public static void main (string [] args)     {         scanner scan = new scanner (system.in);          system.out.println("we calculate if 2 triangles          congruent.");          system.out.println("enter vertices values of first triangle.");         system.out.println("please enter x1:");         float x11 = scan.nextint();         system.out.println("please enter y1:");         float y11 = scan.nextint();         system.out.println("please enter x2:");         float x12 = scan.nextint();         system.out.println("please enter y2:");         float y12 = scan.nextint();         system.out.println("please enter x3:");         float x13 = scan.nextint();         system.out.println("please enter y3:");         float y13 = scan.nextint();          system.out.println("enter vertices values of second triangle.");         system.out.println("please enter x1:");         float x21 = scan.nextint();         system.out.println("please enter y1:");         float y21 = scan.nextint();         system.out.println("please enter x2:");         float x22 = scan.nextint();         system.out.println("please enter y2:");         float y22 = scan.nextint();         system.out.println("please enter x3:");         float x23 = scan.nextint();         system.out.println("please enter y3:");         float y23 = scan.nextint();         //calculating distances between vertices of first triangle ,          placing them in variables         double a1 = math.sqrt((math.pow((x11 - x12), 2)) + (math.pow((y11 -          y12), 2)));         double b1 = math.sqrt((math.pow((x12 - x13), 2)) + (math.pow((y12 -          y13), 2)));         double c1 = math.sqrt((math.pow((x13 - x11), 2)) + (math.pow((y13 -          y11), 2)));         //calculating distances between vertices of second triangle ,          placing them in variables         double a2 = math.sqrt((math.pow((x21 - x22), 2)) + (math.pow((y21 -          y22), 2)));         double b2 = math.sqrt((math.pow((x22 - x23), 2)) + (math.pow((y22 -          y23), 2)));          double c2 = math.sqrt((math.pow((x23 - x21), 2)) + (math.pow((y23 -          y21), 2)));          system.out.println ("the first triangle (" + x11 + ", " + y11 + ") ("          + x12 + ", " + y12 + ") (" + x13 + ", " + y13 + ").");         system.out.println ("the lengths " + a1 + "," + b1 + "," + c1 +          ".");         system.out.println ("the second triangle (" + x21 + ", " + y21 + ")          (" + x22 + ", " + y22 + ") (" + x23 + ", " + y23 + ").");         system.out.println ("the lengths " + a2 + "," + b2 + "," + c1 +          ".");         // if else chain compares distances between vertices calculate          if triangles congruent on not , outputs result user         if      (a1 == a2 && b1 == b2 && c1 == c2)         {             system.out.println ("the triangles congruent");         }         else if (a1 == a2 && b1 == c2 && c1 == b2)          {             system.out.println ("the triangles congruent");         }         else if (a1 == b2 && b1 == c2 && c1 == a2)         {             system.out.println ("the triangles congruent");         }         else if (a1 == b2 && b1 == a2 && c1 == c2)         {             system.out.println ("the triangles congruent");         }         else if (a1 == c2 && b1 == b2 && c1 == a2)         {             system.out.println ("the triangles congruent");         }         else if (a1 == c2 && b1 == a2 && c1 == b2)         {             system.out.println ("the triangles congruent");         }         else             system.out.println ("the triangles not congruent");     } }


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