IntegerArithmeticDemo4.java

public class IntegerArithmeticDemo4 {

  public static void main(String[] args) {
    int n = 7; // 00000000 00000000 00000000 00000111 = 7
    int a = n << 1; // 00000000 00000000 00000000 00001110 = 14
    int b = n << 2; // 00000000 00000000 00000000 00011100 = 28
    int c = n << 28; // 01110000 00000000 00000000 00000000 = 1879048192
    int d = n << 29; // 11100000 00000000 00000000 00000000 = -536870912
    //        左移29位时，由于最高位变成1，因此结果变成了负数。

  }
}