FULL PRODUCT VERSION :
java version "1.7.0_55"
Java(TM) SE Runtime Environment (build 1.7.0_55-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.55-b03, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Linux app482.auto.mobileiron.com 2.6.18-371.6.1.el5 #1 SMP Wed Mar 12 20:03:51 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux

A DESCRIPTION OF THE PROBLEM :
Following Exception coming while parsing "krb5.conf"

2014-04-17 13:53:12,958 ERROR [UploadSystemBackupImpl] (MIReportScheduler_Worker-2:) Failed to SCP file: java.lang.StringIndexOutOfBoundsException: String index out of range: 0
java.lang.StringIndexOutOfBoundsException: String index out of range: 0
at java.lang.String.charAt(String.java:658)
at sun.security.krb5.Config.trimmed(Config.java:802)
at sun.security.krb5.Config.parseField(Config.java:819)
at sun.security.krb5.Config.parseStanzaTable(Config.java:675)
at sun.security.krb5.Config.<init>(Config.java:171)
at sun.security.krb5.Config.getInstance(Config.java:96)
at sun.security.krb5.PrincipalName.<init>(PrincipalName.java:364)
at sun.security.jgss.krb5.Krb5NameElement.getInstance(Krb5NameElement.java:93)
at sun.security.jgss.krb5.Krb5MechFactory.getNameElement(Krb5MechFactory.java:95)
at sun.security.jgss.GSSManagerImpl.getNameElement(GSSManagerImpl.java:202)
at sun.security.jgss.GSSNameImpl.getElement(GSSNameImpl.java:472)
at sun.security.jgss.GSSNameImpl.init(GSSNameImpl.java:201)
at sun.security.jgss.GSSNameImpl.<init>(GSSNameImpl.java:170)
at sun.security.jgss.GSSNameImpl.<init>(GSSNameImpl.java:151)
at sun.security.jgss.GSSManagerImpl.createName(GSSManagerImpl.java:127)
at com.jcraft.jsch.jgss.GSSContextKrb5.create(GSSContextKrb5.java:80)
at com.jcraft.jsch.UserAuthGSSAPIWithMIC.start(UserAuthGSSAPIWithMIC.java:125)
at com.jcraft.jsch.Session.connect(Session.java:463)
at com.jcraft.jsch.Session.connect(Session.java:183)
at com.mi.middleware.service.impl.UploadSystemBackupImpl.sendViaSCP(UploadSystemBackupImpl.java:820)

Same "karb5.conf" file successfully getting parsed in Java 6.

Exception is due to following method which newly added in Java 7

800 private static String More ...trimmed(String s) {
801 s = s.trim();
802 if (s.charAt(0) == '"' && s.charAt(s.length()-1) == '"' ||
803 s.charAt(0) == '\'' && s.charAt(s.length()-1) == '\'') {
804 s = s.substring(1, s.length()-1).trim();
805 }
806 return s;
807 }

REGRESSION. Last worked in version 6u45


ERROR MESSAGES/STACK TRACES THAT OCCUR :
2014-04-17 13:53:12,958 ERROR [UploadSystemBackupImpl] (MIReportScheduler_Worker-2:) Failed to SCP file: java.lang.StringIndexOutOfBoundsException: String index out of range: 0
java.lang.StringIndexOutOfBoundsException: String index out of range: 0
at java.lang.String.charAt(String.java:658)
at sun.security.krb5.Config.trimmed(Config.java:802)
at sun.security.krb5.Config.parseField(Config.java:819)
at sun.security.krb5.Config.parseStanzaTable(Config.java:675)
at sun.security.krb5.Config.<init>(Config.java:171)
at sun.security.krb5.Config.getInstance(Config.java:96)
at sun.security.krb5.PrincipalName.<init>(PrincipalName.java:364)
at sun.security.jgss.krb5.Krb5NameElement.getInstance(Krb5NameElement.java:93)
at sun.security.jgss.krb5.Krb5MechFactory.getNameElement(Krb5MechFactory.java:95)
at sun.security.jgss.GSSManagerImpl.getNameElement(GSSManagerImpl.java:202)
at sun.security.jgss.GSSNameImpl.getElement(GSSNameImpl.java:472)
at sun.security.jgss.GSSNameImpl.init(GSSNameImpl.java:201)
at sun.security.jgss.GSSNameImpl.<init>(GSSNameImpl.java:170)
at sun.security.jgss.GSSNameImpl.<init>(GSSNameImpl.java:151)
at sun.security.jgss.GSSManagerImpl.createName(GSSManagerImpl.java:127)
at com.jcraft.jsch.jgss.GSSContextKrb5.create(GSSContextKrb5.java:80)
at com.jcraft.jsch.UserAuthGSSAPIWithMIC.start(UserAuthGSSAPIWithMIC.java:125)
at com.jcraft.jsch.Session.connect(Session.java:463)
at com.jcraft.jsch.Session.connect(Session.java:183)
at com.mi.middleware.service.impl.UploadSystemBackupImpl.sendViaSCP(UploadSystemBackupImpl.java:820)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
krb5.conf file

[logging]
 default = FILE:/var/log/krb5libs.log
 kdc = FILE:/var/log/krb5kdc.log
 admin_server = FILE:/var/log/kadmind.log
[libdefaults]
 default_realm = EXCHCE.COM
 default_keytab_name = FILE:/etc/krb5.keytab
 dns_lookup_realm = false
 dns_lookup_kdc = false
 ticket_lifetime = 24h
 renew_lifetime = 7d
 forwardable = true
[realms]
 EXCHCE.COM = {
  kdc = prince.exchce.com
  default_domain = exchce.com
  admin_server = prince.exchce.com
 }
[domain_realm]
 .exchce.com = EXCHCE.COM
 exchce.com = EXCHCE.COM
---------- END SOURCE ----------

SUPPORT :
YES