casting.java

来自「Thinking in JAVA第四版源代码」· Java 代码 · 共 14 行

//: operators/Casting.java

public class Casting {
  public static void main(String[] args) {
    int i = 200;
    long lng = (long)i;
    lng = i; // "Widening," so cast not really required
    long lng2 = (long)200;
    lng2 = 200;
    // A "narrowing conversion":
    i = (int)lng2; // Cast required
  }
} ///:~