A subclass can be generalized to a superclass. A superclass cannot become a more specific subclass.

There are 8 primitive data types Turn back

String class is also a data type. It is immutable.

Scanner class is used to read input.

An array is a reference data type, meaning that it's just an address

Functions declared static don't need the creation of an instance for being accessed or used.

Object is a superclass of everything we create in java

If a superclass does not have a default constructor(constructor without parameters), any subclasses extending it must make an explicit call to one of the parameterized constructors of the superclass.

An abstract method is a method declared without an implementation. Abstract methods don't have a body. Abstract classes may have abstract and non-abstract methods.

Classes being written in the same file should not have access modifiers or the code will not execute.

I met Patricia Neal, John Houseman. But I loved my grandfather because he was this kind, talented man.

Trust me: our critical infrastructure is vulnerable to cyber-attack, to potential terrorist attack, and we are not taking this threat seriously enough.

When I found out I was pregnant, I was 22. It was really scary because I was working the music thing, and with a kid coming, you just can't live that life with a child.

Newton, of course, was the inventor of differential calculus so his place in the tale is quite special.

I have always thought that term limits for Justices sound good until you really give the issue some thought.

This is my simple religion. There is no need for temples no need for complicated philosophy. Our own brain our own heart is our temple the philosophy is kindness.

The simplest questions are the most profound. Where were you born? Where is your home? Where are you going? What are you doing? Think about these once in a while and watch your answers change.

You always have to evolve - the minute you start building a moat around you to keep yourself safe, you're going to lose.

2014 wasn't my finest year. I was a bit inconsistent. I did too much training and got a bit overtired. It's the way I am, and sometimes I overtrain.

I don't know if people really want to know how I feel about drugs. I'm not such a stickler. I believe you can choose to live your life any way you want.

My goal is to be able to provide for myself and not have to worry about the daily expenses. I do want to be able to benefit from my work and make a good living, but I love it so much that I would do it for free.

Back in my 20s, when I wrote 'A Place of Greater Safety,' the French Revolution novel, I thought, 'I'll always have to write historical novels because I can't do plots.' But in the six years of writing that novel, I actually learned to write, to invent things.

Ninety percent of my best friends back home are plumbers, electricians, builders, or landscapers. Most of our dads worked in trades.

I consider adversity being good sometimes, you know.

I have never been so calculating as to sing some Barry White song to get a girl. But I do think it's very romantic to cook dinner and sit around the piano at night and sing together.

Compared to the United States and certainly a lot of other countries around the world... per year, Australians do see more films.

Comics is a great medium to get a lot of stories out.

I remember as a boy when the conversation on civil rights was won in the South. I remember a time when one of my friends made a racist joke and another said, 'Hey man, we don't go for that anymore.'

The two largest oil-producing countries in Latin America, Mexico and Venezuela, sold petroleum to Nicaragua at concessional rates for several years beginning in 1980. The program was curtailed because Nicaragua could not make even reduced payments.

It will be a great day when our schools have all the money they need, and our air force has to have a bake-sale to buy a bomber.

Everybody loves to spend money at least some of the time - because everybody loves the stuff you can buy with it. The key to the pleasure level of any transaction is the balance between the pain of the payment and the reward of the purchased object.

If the bottom dropped out of the market and the artist was not going to sell anything, he or she will keep working, and the dealer will keep trying to find some way to convince somebody to buy this stuff.

If you can do a half-assed job of anything, you're a one-eyed man in a kingdom of the blind.

For decades, my research was driven by outstanding problems in macroeconomics: mainly growth theory and employment theory.