Section A.6 Statements
Subsection A.6.1 Declarations
There are two kinds of declaration statements: field declarations, which include a class’s instance variables, and local variable declarations.
- Put one statement per line, possibly followed by an end-of-line comment if the declaration needs explanation.
- Initialize local variables when they are declared. Instance variables are given default initializations by Java.
- Place variable declarations at the beginning of code blocks in which they are used rather than interspersing them throughout the code block.
The following class definition illustrates these points:
public class Example {
private int size = 0; // Window length and width
private int area = 0; // Window's current area
public void myMethod() {
int mouseX = 0; // Beginning of method block
if (condition) {
int mouseY = 0; // Beginning of if block
...
} // if
} // myMethod()
} // Example
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