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Java Chapter 1

Java Chapter 1. Problem 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.

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Java Chapter 1

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  1. Java Chapter 1 Problem 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.

  2. Memory:Each memory location is eight bits or a byte of information. 1 kilobyte = 1024 bytes. 2^10 1 megabyte = 2^20 bytes. 1 gigabyte = 2^30 bytes.Binary (base 2): 1 or 0 in a bit. Conversion to base 10 1101 = 1x2^3 + 1x2^2 + 0x2^1 + 1x2^0 = 13

  3. 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.

  4. Java compiler and interpreter are part of the Java JDK (Java Development Kit) – download from OracleSyntax: rules of a language. These rules must be followed.Semantics: What will happen when the statement is executed.

  5. Errors:compile-time error: syntax errors, incompatible types… runtime error: causes the program to terminate abnormally (crash!). logical error: bad results when executed.

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