initialvalues.java

来自「thinking in java 书中源码 第四版」· Java 代码 · 共 46 行

//: initialization/InitialValues.java
// Shows default initial values.
import static net.mindview.util.Print.*;

public class InitialValues {
  boolean t;
  char c;
  byte b;
  short s;
  int i;
  long l;
  float f;
  double d;
  InitialValues reference;
  void printInitialValues() {
    print("Data type      Initial value");
    print("boolean        " + t);
    print("char           [" + c + "]");
    print("byte           " + b);
    print("short          " + s);
    print("int            " + i);
    print("long           " + l);
    print("float          " + f);
    print("double         " + d);
    print("reference      " + reference);
  }
  public static void main(String[] args) {
    InitialValues iv = new InitialValues();
    iv.printInitialValues();
    /* You could also say:
    new InitialValues().printInitialValues();
    */
  }
} /* Output:
Data type      Initial value
boolean        false
char           [ ]
byte           0
short          0
int            0
long           0
float          0.0
double         0.0
reference      null
*///:~