physicalconstants.java

来自「书籍Effective java的源代码」· Java 代码 · 共 9 行

// Constant utility class
public class PhysicalConstants {
  private PhysicalConstants() { }  // Prevents instantiation

  public static final double AVOGADROS_NUMBER   = 6.02214199e23;
  public static final double BOLTZMANN_CONSTANT = 1.3806503e-23;
  public static final double ELECTRON_MASS      = 9.10938188e-31;
}