Student Management System

 Packagepractice;ImportJava.util.Scanner;ImportJavax.swing.JOptionPane; Public classATM1 { Public Static intXuehao[] =New int[10];  Public StaticString name[] =NewString[10];  Public Static intChengji[] =New int[10];  Public Static inti = 0;  Public Static voidMain (string[] args) {Joptionpane.showmessagedialog (NULL, "Welcome"); String Zhanghu= "123456"; String Mima= "123456"; BooleanISO =Denglu (Zhanghu, Mima); if(ISO) { while(true) {String b= Joptionpane.showinputdialog (NULL,                        "1, add \n2, display \n3, delete \n4, modify \n5, sort \n6, query \n7"); intA =Integer.parseint (b); Switch(a) { Case1: Tianjia ();  Break;  Case2: Xianshi ();  Break;  Case3: Shanchu ();  Break;  Case4: Xiugai ();  Break;  Case5: Paixu ();  Break;  Case6: Chaxu ();  Break;  Case7: System.exit (0);                    ;  Break; default: Joptionpane.showmessagedialog (NULL, "Input only 1-7"); }}}}//Query methodPrivate Static voidChaxu () {intCZ =Chazhao (); if(CZ! =-1) {Joptionpane.showmessagedialog (NULL, Xuehao[cz] +Name[cz]+Chengji[cz]); }}//Sorting MethodPrivate Static voidPaixu () { for(intn = 0; n < i; n++) {             for(intj = n + 1; J < I; J + +) {                if(Chengji[n] <Chengji[j]) {                    ints =Chengji[n]; Chengji[n]=Chengji[j]; CHENGJI[J]=s; String XM=Name[n]; Name[n]=Name[j]; NAME[J]=XM; intXH =Xuehao[n]; Xuehao[n]=Xuehao[j]; XUEHAO[J]=s;    }}} Xianshi (); }//Modify MethodPrivate Static voidXiugai () {intn =Chazhao (); if(n! =-1) {String str= Joptionpane.showinputdialog (NULL, "Please enter the modified number"); String str1= Joptionpane.showinputdialog (NULL, "Please enter a modified name"); String str2= Joptionpane.showinputdialog (NULL, "Please enter a modified score"); Xuehao[n]=integer.parseint (str); Name[n]=str1; Chengji[n]=Integer.parseint (STR2); }}//Delete MethodPrivate Static voidShanchu () {ints =Chazhao (); if(s! =-1) {             for(intn = s; n < i; n++) {Xuehao[n]= Xuehao[n + 1]; Name[n]= Name[n + 1]; Chengji[n]= Chengji[n + 1]; I--; }}}//Display methodPrivate Static voidXianshi () {String info= "";  for(intn = 0; n < i; n++) {Info+ = Xuehao[n] + name[n] + chengji[n] + "\ n"; } joptionpane.showmessagedialog (NULL, info); }//Add MethodPrivate Static voidTianjia () {String str= Joptionpane.showinputdialog (NULL, "Please enter the school number"); String str1= Joptionpane.showinputdialog (NULL, "Please enter your name"); String str2= Joptionpane.showinputdialog (NULL, "Please enter your score"); Xuehao[i]=integer.parseint (str); Name[i]=str1; Chengji[i]=Integer.parseint (STR2); I++; }//Landing Method Public Static BooleanDenglu (String Zhanghu, String mima) { for(intn = 3; n > 0; n--) {String str= Joptionpane.showinputdialog (NULL, "Please enter your account"); String str1= Joptionpane.showinputdialog (NULL, "Please enter your password"); if(Str.equals (STR1) &&str1.equals (STR1)) {                return true; }            if(n = = 1) {Joptionpane.showmessagedialog (NULL, "illegal input"); return false; } joptionpane.showmessagedialog (NULL, "Your input is wrong, please re-enter" + (n-1)); }        return false; }//Find Method Public Static intChazhao () {intindex =-1; String Str= Joptionpane.showinputdialog (NULL, "Please enter the person you want to find");  for(intn = 0; n < i; n++) {            if(Str.equals (Name[n])) {returnN; } joptionpane.showmessagedialog (NULL, "No this man."); }        return-1; }}

Student Management System