Tij Reading notes (chap. III)

Notes
3: Program Flow

Use Java operator precedence: multiplication and subtraction is worth the time you're replicating between objects, you're actually copying its reference. Aliasing during method invocation

Mathematical operations Single-character expression (Regular expressions) automatic increment and decrement relational operators test the equality logical operator of an object (short circuiting) bitwise operator SHIFT Operation Selector Meta If-else operator comma operator

The string and + operators commonly use error type conversion constants for operator aspects (literals)

Java has no "sizeof"

Summary of the revisit precedence operator except for a Boolean, all primitive types can be converted to other primitive types.

Execution control true and false conditional judgment (conditional) must be able to produce a Boolean result.      Return Loop statement while do-while for comma operator break and continue infamous "goto" 1. Normal continue will retreat to the very beginning of the internal loop, and then proceed with the internal loop.      2. Tagged continue will jump to the label and re-enter the loop directly following the tag.      3.break will sneak out of the "bottom" of the loop.    4. A tagged break will sneak out of the "bottom" of the loop labeled by this label. The Siwtch math.random () generates 0.0, and its domain is [0,1).

Summary: This chapter describes most of the basic features that become language: computing, Operator precedence, type conversion, selection, and looping. There are some small knowledge and easy to make mistakes in the place: P