Java Chapter 1Problem solving:

1. Understanding the problem.

2. Breaking the problem into manageable pieces.

3. Designing a solution.

4. Considering alternatives to the solution and refining the solution.

5. Implementing the solution

6. Testing the solution and fixing any problems.

Memory:Each memory location is eight

bits or a byte of information.1 kilobyte = 1024 bytes.

2^101 megabyte = 2^20 bytes.1 gigabyte = 2^30 bytes.

Binary (base 2): 1 or 0 in a bit.Conversion to base 101101 = 1x2^3 + 1x2^2 +

0x2^1 + 1x2^0 = 13

Comments: Statements ignored by the computer.

// This begins a single line comment.

/* This begins a multiline comment.

*/ This will end the comment.

White space in java is ignored.

Java compiler and interpreter are part of the Java JDK (Java Development Kit) – download from Oracle

Syntax: rules of a language. These rules must be followed.

Semantics: What will happen when the statement is executed.

Errors:

compile-time error: syntax errors, incompatible types…

runtime error: causes the program to terminate abnormally (crash!).

logical error: bad results when executed.