I'm having some trouble getting the output text on the jtextfield. The code works in the output but when I press the Decrypt jButton on the GUI its sending a bunch of errors

need help with a code to get the decrypt button to get the output cipher text

public String Decrypt(String key, String CT) 107 108 Transposition ob = new Transposition(); int d = CT. length() / key.length(); String Skey = ""; Skey = ob.GetSerial(key); 115 116 117 118 int c = key.length(); int r = CT.length() / c; int i = 0; char() Array = new char[r][c]; ava in.java t.java for (int i = 0; i Notifications Output Java Application 66 (run) Debugger Console Starti ormed (ActionEvent Formed(ActionEvent Formed actinnen run: BUILD SUCCESSFUL (total time: 0 seconds) Startl (run) runn int c = key.length(); int r = CT. length() / c; int i = 0; charu Array = new char[r] (c); for (int i = 0; i Notifications Output Java Application 66 (run) 3 Debugger Console > Starti armed (ActionEvent ormed(ActionEvent medartinent run: BUILD SUCCESSFUL (total time: 0 seconds) Startl (run) runni U Japaye Java E Caesar java X Source 317 318 319 Design History @ * @param args the command line arguments B */ public static void main(String args) { Scanner sc = new Scanner(System.in); System.out.println("Transposition "); Transposition ob = new Transposition(); System.out.println("Enter the Plain text : "); String PT = sc.nextLine(); System.out.println("Enter the key : "); String key = sc.nextLine(); String CT = "; System.out.println("Plain Text : " + PT); PT = ob. SpaceFree (PT); iva System.out.println("Space Free : " + PT); System.out.println(); CT = ob.Encrypt(key, PT); System.out.println("Cipher Text : " + CT); ob.Decrypt(key, CT); Look and feel sett 0 365 DO + atore key): String g PT): String A 366 /* Create and display the form */ 367 java.awt. EventQueue.invokela 368 new Transposition().setv 369 370 Previous Ne Find: Select start1.Transposition > Notifications Output JavaApplication 66 (run) Debugger Console run: BUILD SUCCESSFUL (total time: 0 String Start1 (run) ed(ActionEvent ed(ActionEvent odlarsinntuont Start 1 (run) running... package start1; import java.util.Arrays; import java.util.Scanner; public class Transposition extends javax.swing.JFrame { String SpaceFree(String PT) { String SFPT = ""; for (int i = 0; i Notifications Output Java Application 66 (run) % w Debugger Console Start1 .ctionEvent actionEvent rtiansen run: BUILD SUCCESSFUL (total time: 0 seconds) Start 1 (run) runni Startpage.java arce o I T T Caesar.java o Design History int i = 0, 1l = 0; char[Array = new char[r][c]; for (int i = 0; i Notifications Output railfence (run) #5 Debugger Console Start 1 Java Application 66 (run) run: BUILD SUCCESSFUL (total time: 0 seconds) running... Start 1 (run) conf... T8D-R 0.00 h sar.java x los Playfair.java X playfair 1.java * playfair1.java X Design History . . F System.out.print(key.charAt(i) + " "); Startpage.java T B System.out.println(); for (int i = 0; i Notifications Output W railfence (run) #5 Debugger Consol Java Application 66 (run) 8 run o l java | Caesar java playfair1.java Design playfair1.java History D Startpage java D E Transposition.java - Decrypt Plain Text: Key : Cipher Text : Decrypt Start Exit Reset Notifications Output Java Application 66 (run) Debugger Console Start1 (run) Start (run) run: BUILD SUCCESSFUL (total time: 0 seconds) Start 1 (run) running... public String Decrypt(String key, String CT) 107 108 Transposition ob = new Transposition(); int d = CT. length() / key.length(); String Skey = ""; Skey = ob.GetSerial(key); 115 116 117 118 int c = key.length(); int r = CT.length() / c; int i = 0; char() Array = new char[r][c]; ava in.java t.java for (int i = 0; i Notifications Output Java Application 66 (run) Debugger Console Starti ormed (ActionEvent Formed(ActionEvent Formed actinnen run: BUILD SUCCESSFUL (total time: 0 seconds) Startl (run) runn int c = key.length(); int r = CT. length() / c; int i = 0; charu Array = new char[r] (c); for (int i = 0; i Notifications Output Java Application 66 (run) 3 Debugger Console > Starti armed (ActionEvent ormed(ActionEvent medartinent run: BUILD SUCCESSFUL (total time: 0 seconds) Startl (run) runni U Japaye Java E Caesar java X Source 317 318 319 Design History @ * @param args the command line arguments B */ public static void main(String args) { Scanner sc = new Scanner(System.in); System.out.println("Transposition "); Transposition ob = new Transposition(); System.out.println("Enter the Plain text : "); String PT = sc.nextLine(); System.out.println("Enter the key : "); String key = sc.nextLine(); String CT = "; System.out.println("Plain Text : " + PT); PT = ob. SpaceFree (PT); iva System.out.println("Space Free : " + PT); System.out.println(); CT = ob.Encrypt(key, PT); System.out.println("Cipher Text : " + CT); ob.Decrypt(key, CT); Look and feel sett 0 365 DO + atore key): String g PT): String A 366 /* Create and display the form */ 367 java.awt. EventQueue.invokela 368 new Transposition().setv 369 370 Previous Ne Find: Select start1.Transposition > Notifications Output JavaApplication 66 (run) Debugger Console run: BUILD SUCCESSFUL (total time: 0 String Start1 (run) ed(ActionEvent ed(ActionEvent odlarsinntuont Start 1 (run) running... package start1; import java.util.Arrays; import java.util.Scanner; public class Transposition extends javax.swing.JFrame { String SpaceFree(String PT) { String SFPT = ""; for (int i = 0; i Notifications Output Java Application 66 (run) % w Debugger Console Start1 .ctionEvent actionEvent rtiansen run: BUILD SUCCESSFUL (total time: 0 seconds) Start 1 (run) runni Startpage.java arce o I T T Caesar.java o Design History int i = 0, 1l = 0; char[Array = new char[r][c]; for (int i = 0; i Notifications Output railfence (run) #5 Debugger Console Start 1 Java Application 66 (run) run: BUILD SUCCESSFUL (total time: 0 seconds) running... Start 1 (run) conf... T8D-R 0.00 h sar.java x los Playfair.java X playfair 1.java * playfair1.java X Design History . . F System.out.print(key.charAt(i) + " "); Startpage.java T B System.out.println(); for (int i = 0; i Notifications Output W railfence (run) #5 Debugger Consol Java Application 66 (run) 8 run o l java | Caesar java playfair1.java Design playfair1.java History D Startpage java D E Transposition.java - Decrypt Plain Text: Key : Cipher Text : Decrypt Start Exit Reset Notifications Output Java Application 66 (run) Debugger Console Start1 (run) Start (run) run: BUILD SUCCESSFUL (total time: 0 seconds) Start 1 (run) running