Statements

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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.

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• Place variable declarations at the beginning of the 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 class