The keytool displays passwords as they are entered. This
is considered very bad practice from a security point of view.

Example:
# keytool -import -alias patchsigning -file /opt/SUNWppro/etc/certs/patchsigningcert.b64 -keystore /usr/j2se/jre/lib/security/cacerts
Enter keystore password: foobar
                          ^^^^^^

# java -version
java version "1.4.0_00"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0_00-b05)
Java HotSpot(TM) Client VM (build 1.4.0_00-b05, mixed mode)
# pkginfo -l SUNWj3rt
   PKGINST: SUNWj3rt
      NAME: J2SDK 1.4 runtime environment
  CATEGORY: system
      ARCH: sparc
   VERSION: 1.4.0,REV=2002.03.19.23.51
   BASEDIR: /usr
    VENDOR: Sun Microsystems, Inc.
      DESC: Java virtual machine and core class libraries
    PSTAMP: exactvm-sm19235127
  INSTDATE: May 06 2002 16:14
   HOTLINE: Please contact your local service provider
    STATUS: completely installed
     FILES: 644 installed pathnames
                  14 shared pathnames
                  65 directories
                  60 executables
              107109 blocks used (approx)
# uname -a
SunOS sunhsc 5.9 Generic sun4u sparc SUNW,Ultra-60