java password manager

When we design the registration module, we often have to verify that two times the password is consistent, then how to use JPasswordField implementation?First, the GUI interface is designed:Implementation 1: Use the GetText () method to obtain JPasswordField content, but this method has been deprecated. Also, simply put, the difference between equals () and "= =" Compares an object: "Equals ()" Compares the object's "content" only, and "= =" compares

(); } System. out. println (); }Private Static void Keymatrix(String key) {//TODO auto-generated method stubhashsetNewHashset""; String Upperkey = Key.touppercase (); for(intI=0; Iif(Upperkey.charat (i) >=' A ' Upperkey.charat (i) ' Z ') {if(!hs.contains (Upperkey.charat (i))) {Hs.add (Upperkey.charat (i)); Formatkey+=upperkey.charat (i); } } } for(CharI=' A '; i' Z '; i++) {if(!hs.contains (i)) {formatkey+=i; } }intm =0; for

Packagedemo_01;publicclasscipher_main{publicstaticvoidmain (String[] args) {//plaintext stringp= "beijing2008olympicgames";//Key int[][]key={{ 1,4,3},{5,6}}; Stringcip=permutationcipher.run (P,key); SYSTEM.OUT.PRINTLN (CIP); Int[][]rekey=decryptkey.run (key); Stringcy=permutationcipher.run (Cip,rekey); System.out.println (CY);}} Packagedemo_01;publicclasspermutationcipher{publicstaticstringrun ( Stringp,int[][]key) {////plaintext//stringp= "beijing2008olympicgames";//////key// int[][]key={{1,4,3

Packagedemo_01;publicclasscipher_main{publicstaticvoidmain (String[] args) {//plaintext stringp= "beijing2008olympicgames";//Key int[][]key={{ 1,4,3},{5,6}}; Stringcip=permutationcipher.run (P,key); SYSTEM.OUT.PRINTLN (CIP);//int[][]rekey=decryptkey.run (key);////stringcy= Permutationcipher.run (Cip,rekey);////system.out.println (CY);////////}}packagedemo_01;public Classpermutationcipher{publicstaticstringrun (Stringp,int[][]key) {////plaintext//stringp= "beijing2008olympicgames";//////secret ke

To convert a string into a character arrayFirst letter judgmentIdea: How to get the first letterARR[0] The first element of the array is the first letterA number evaluates to True to a number false to a non-numeric"0123456789". Contains (arr[0]+ "");The alphabet determines that one of them is a letter.(arr[0]>= ' z ' arr[0]Other index positions can be judged simply by traversing the arrayNote: When writing this code, it should be a judgment to write the verification, after all the interpretation

(Passwordfield_2.getpassword ()). Trim (); Try{dos.writeutf (phone); Dos.writeutf (password); } Catch(IOException E1) {e1.printstacktrace (); } } Else{javax.swing.JOptionPane.showMessageDialog (logindialog). This, "Input password is inconsistent ..."); System.out.println ("Input password is inconsistent ..."); Passwordfi