charactertest.java

java程序设计 清华出版社 孙燮华老师编写的程序源代码

//characterTest.java, Author Xie-Hua Sun, 2006.07.26
import java.lang.Character;

public class characterTest {
  public static void main(String args[]){
    String s = "haracter";

    Character upperZ = new Character('Z'); //将字符Z包装成对象upperZ
    Character upperC = new Character('C'); //将字符C包装成对象upperC
    Character lowerc = new Character('c'); //将字符c包装成对象lowerc
    Character char5  = new Character('5'); //将字符5包装成对象char5

    System.out.println("Character.toLowerCase('A') = " + Character.toLowerCase('A'));
    System.out.println("Character.isLowerCase('c') = " + Character.isLowerCase('c'));
    System.out.println("Character.isUpperCase('d') = " + Character.isUpperCase('d'));
    System.out.println("Character.isDigit('8')     = " + Character.isDigit('8'));
    System.out.println("Character.forDigit(15, 16) = " + Character.forDigit(15, 16));
    System.out.println("upperZ.equals(upperC)      = " + upperZ.equals(upperC));
    System.out.println("(upperC.toString()).concat(\"haracter\") = " + (upperC.toString()).concat(s));
    System.out.println("upperZ.equals(new Character(Character.toUpperCase('z')) = " + upperZ.equals(new Character(Character.toUpperCase('z'))));
    //System.out.println(upperC.concat(s));    //error! upperC is a Character object
  }
}