[JAVA100 example]003, array data manipulation

public class myarray{


//initialization of array variables


char[] Cnum = {´1´,´2´,´3´,´4´,´5´,´6´,´7´,´8´,´9´,´0´};


char[] CStr = {´a´,´b´,´c´,´d´,´e´,´f´,´g´,´h´,


´i´,´j´,´k´,´l´,´m´,´n´,´o´,´p´,


´q´,´r´,´s´,´t´,´u´,´v´,´w´,´x´,´y´,´z´};


int[] Imonth = {31,28,31,30,31,30,31,31,30,31,30,31};


string[] Smail = {"@", "."};


/**


*<br> Method Description: Verifying email


*<br> input parameter: String Spara the verified e-mail character


*<br> return Type: Boolean returns True if the format of the checksum conforms to the e-mail format; false


*/


public boolean isMail (String Spara) {


for (int i=0;i<smail.length;i++) {


if (Spara.indexof (smail[i)) ==-1)


return false;


　 }


return true;


　 }


/**


*<br> Method Description: Judge whether it is a digital


*<br> input parameter: String Spara. Need to judge the string


*<br> return Type: Boolean. Returns true if both are numeric types, otherwise returns false


*/


public boolean isnumber (String Spara) {


int iplength = Spara.length ();


for (int i=0;i<iplength;i++) {


char ctemp = Spara.charat (i);


Boolean btemp = false;


for (int j=0;j<cnum.length;j++) {


if (Ctemp==cnum[j]) {


btemp = true;


break;


　 　　 }


　 　 }


if (!btemp) return false;


　 　}


return true;


　 }


/**


*<br> Method Explanation: Judge whether all is the English character


*<br> input parameter: String Spara. The character to check


*<br> return Type: Boolean. If all characters return true; False


*/


public boolean isstring (String Spara) {


int iplength = Spara.length ();


for (int i=0;i<iplength;i++) {


char ctemp = Spara.charat (i);


Boolean btemp = false;


for (int j=0;j<cstr.length;j++) {


if (Ctemp==cstr[j]) {


btemp = true;


break;


　 　　 }


　 　 }


if (!btemp) return false;


　 　}


return true;


　 }


/**


*<br> Method Description: Judge whether it is a leap year


*<br> input parameter: int Ipara. The year to Judge


*<br> return Type: Boolean. Returns true if it is a leap year, otherwise returns false


*/


public boolean chickday (int ipara) {


return ipara%100==0&&ipara%4==0;


　 }


/**


*<br> Method Description: Check the date format is correct


*<br> input parameter: String Spara. The date character to check


*<br> return type: Int. 0 Days period format is correct,-January or this day is not required,-2 days date format is incorrect


*/


public int Chickdata (String Spara) {


Boolean btemp = false;


//input date length is incorrect


if (spara.length ()!=10) return-2;


//Get year


String syear = spara.substring (0,4);


//Judging whether the year is a digital


if (!isnumber (syear)) return-2;


//Get month


String smonth = spara.substring (5,7);


//Determine whether the month is a digital


if (!isnumber (smonth)) return-2;


//Get Day


String sday = spara.substring (8,10);


//Judgment Day is a digital


if (!isnumber (sday)) return-2;


//Convert year, month and day to digital


int iyear = Integer.parseint (syear);


int imon = Integer.parseint (smonth);


int iday = Integer.parseint (Sday);


if (imon>12) return-1;


//Leap Year February processing


if (Imon==2&&chickday (iyear)) {


if (iday>29) return 2;


}else{


if (iday>imonth[imon-1]) return-1;


　 }


return 0;


　 }


/**


*<br> Method Description: Main method, Test with


*<br> input Parameters:


*<br> return type:


*/


public static void Main (string[] arges) {


myarray MA = new MyArray ();


//Check email address


Boolean bmail = Ma.ismail ("tom@163.com");


System.out.println ("1 bmail is" +bmail);


bmail = Ma.ismail ("tom@163com");


System.out.println ("2 bmail is" +bmail);


//Demo is digital


Boolean bisnum = Ma.isnumber ("1234");


System.out.println ("1:bisnum=" +bisnum);


bisnum = Ma.isnumber ("123r4");


System.out.println ("2:bisnum=" +bisnum);


//Demo is English character


Boolean bisstr = ma.isstring ("Wer");


System.out.println ("1:bisstr=" +bisstr);


bisstr = ma.isstring ("Wer3");


System.out.println ("2:bisstr=" +bisstr);


//Demo Check date


int iistime = Ma.chickdata ("2003-12-98");


System.out.println ("1:iistime=" +iistime);


iistime = Ma.chickdata ("2003-111-08");


System.out.println ("2:iistime=" +iistime);


iistime = Ma.chickdata ("2003-10-08");


System.out.println ("3:iistime=" +iistime);


iistime = Ma.chickdata ("2000-02-30");


System.out.println ("4:iistime=" +iistime);


　 }


}