Nashorn

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sudo apt install openjdk-8-jdk
update-alternatives --query jjs
sudo update-alternatives --config jjs
jjs -v

NRIC By Age

mkdir -p ~/Documents/nashorn-playground
cd       ~/Documents/nashorn-playground

cat <<'EOF' >> ~/Documents/nashorn-playground/printNricOf18YearsMan.js
function printNricOf18YearsMan(message) {
    var DAY_1  = 1,
        AGE_18 = 18,
        todayDate   = moment(),
        NRIC_FORMAT = 'YYMMDD-[01]-[0001]',
        dobOf18YearsOld  = todayDate.subtract(AGE_18, 'years'),
        nricOf18YearsOld = dobOf18YearsOld.format(NRIC_FORMAT),
        aDayEarly18Years = dobOf18YearsOld.add(DAY_1, 'days'),
        nricOfDayEarly18 = aDayEarly18Years.format(NRIC_FORMAT);
        
    message = 'NRIC of'
            + '\n18 Years old: ' + nricOf18YearsOld
            + '\n17 Years old: ' + nricOfDayEarly18;
    
    print(message);
}
EOF
cat <<'EOF' >> ~/Documents/nashorn-playground/printNricOf56YearsMan.js
function printNricOf56YearsMan(message) {
    var DAY_1  = 1,
        AGE_56 = 56,
        todayDate   = moment(),
        NRIC_FORMAT = 'YYMMDD-[01]-[0001]',
        dobOf56YearsOld  = todayDate.subtract(AGE_56, 'years'),
        nricOf56YearsOld = dobOf56YearsOld.format(NRIC_FORMAT),
        aDayEarly56Years = dobOf56YearsOld.add(DAY_1, 'days'),
        nricOfDayEarly56 = aDayEarly56Years.format(NRIC_FORMAT);
        
    message = 'NRIC of'
            + '\n56 Years old: ' + nricOf56YearsOld
            + '\n55 Years old: ' + nricOfDayEarly56;
    
    print(message);
}
EOF

jjs -v
# load('./src/main/resources/javascript/momentScript.js');
load('https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.4/moment.min.js');

load('./printNricOf18YearsMan.js');
printNricOf18YearsMan();
load('./printNricOf56YearsMan.js');
printNricOf56YearsMan();

NRIC By Life Asia Age

mkdir -p ~/Documents/nashorn-playground
cd       ~/Documents/nashorn-playground

cat <<'EOF' >> ~/Documents/nashorn-playground/printNricByLifeAsia18YearsMan.js
function printNricByLifeAsia18YearsMan(message) {
    var DAY_1     = 1,
        AGE_18    = 18,
        todayDate = moment(),
        LIFE_ASIA_AGE    = AGE_18 - 1,
        NRIC_FORMAT      = 'YYMMDD-[01]-[0001]',
        dobOf18YearsOld  = todayDate.subtract(LIFE_ASIA_AGE, 'years'),
        nricOf18YearsOld = dobOf18YearsOld.format(NRIC_FORMAT),
        aDayEarly18Years = dobOf18YearsOld.add(DAY_1, 'days'),
        nricOfDayEarly18 = aDayEarly18Years.format(NRIC_FORMAT);
        
    message = 'NRIC of'
            + '\n18 Years old: ' + nricOf18YearsOld
            + '\n17 Years old: ' + nricOfDayEarly18;
    
    print(message);
}
EOF
cat <<'EOF' >> ~/Documents/nashorn-playground/printNricByLifeAsia56YearsMan.js
function printNricByLifeAsia56YearsMan(message) {
    var DAY_1       = 1,
        AGE_56      = 56,
        todayDate   = moment(),
        LIFE_ASIA_AGE    = AGE_56 - 1,
        NRIC_FORMAT      = 'YYMMDD-[01]-[0001]',
        dobOf56YearsOld  = todayDate.subtract(LIFE_ASIA_AGE, 'years'),
        nricOf56YearsOld = dobOf56YearsOld.format(NRIC_FORMAT),
        aDayEarly56Years = dobOf56YearsOld.add(DAY_1, 'days'),
        nricOfDayEarly56 = aDayEarly56Years.format(NRIC_FORMAT);
        
    message = 'NRIC of'
            + '\n56 Years old: ' + nricOf56YearsOld
            + '\n55 Years old: ' + nricOfDayEarly56;
    
    print(message);
}
EOF

jjs -v
# load('./src/main/resources/javascript/momentScript.js');
load('https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.4/moment.min.js');

load('./printNricByLifeAsia18YearsMan.js');
printNricByLifeAsia18YearsMan();
load('./printNricByLifeAsia56YearsMan.js');
printNricByLifeAsia56YearsMan();

References