How to change image permission mode to 777 using Java code?

chmod 777chmod a-w file (removes all writing permissions) chmod o+x file (sets execute permissions for other (public permissions)) chmod u=rx file (Give the owner rx permissions,Thus, 777 (111 111 111) is all permissions for everyone, while 700 (111 000 000) is all permissions only for the owner. Other combinations are also common: 666 (110 110 110) is