2 Einfache Programme

= compares two values

An assignment a=b is not an expression

Char is not a numeric type

Expressions that consist of multiple parts have no type

Evaluating an expression means outputting its result

One has to evaluate an expression to determine its type

Large integer numbers have type long

A literal is not an expression

When passing a literal string as argument to a method, no quotes are needed

Local variables are automatically initialized

Expressions must consist of more than one piece

\ is a normal character in char and String literals

There are no long literals

Every sequence of letters and digits starting with a letter can be used as an identifier

String literals can be in single quotes

One needs to call the String constructor to get a String object from a literal

The type of a numerical expression depends on the type expected by the surrounding context

Variables don't need to be declared

Variable declarations don't need a type

= stores an expression in a variable

In integer numbers, decimal digits with value `0` take less storage than decimal digits with other values

Sprechen Sie Java: Eine Einführung in das systematische Programmieren, 4. Auflage
2. Einfache Programme