自增运算

public class Test1 {
    static int x, y;
    static {
        x = 5;
    }
    public static void main(String[] args) {
        x --;
        someMethod();
        System.out.println(x + y + ++x);
    }
    private static void someMethod() {
        y = x++ + ++x;
    }
}

public class Test1 {
    static int x, y;
    static {
        x = 5;
    }
    public static void main(String[] args) {
        x --; // x = 4
        someMethod();
        System.out.println(x + y + ++x); // 6 + 10 + (6+1) = 23
    }
    private static void someMethod() {
        y = x++ + ++x; 
       // x = (4 + 1) + 1 = 6
       // y = (4 + (4 + 1)) + 1 = 10
    }
}