characterdemo.java~18~

jbuilder2006一书的所有源代码

package controlsentence;

public class CharacterDemo {
  public static void main(String[] args) {
    char char1 = 'c';
    System.out.println("char1 = " + char1);
    Character character1 = new Character(char1);
    //显示字符的值
    System.out.println("character1.charValue() = " + character1.charValue());
    //判断字符是否数字
    System.out.println("character1.character1.isDigit(char1) = "
                       + character1.isDigit(char1));
    //判断字符是否字母
    System.out.println("character1.isLetter(char1) = " + character1.isLetter(char1));
    //将字符转换为小写格式
    System.out.println("character1.toLowerCase('C') = " +
                       character1.toLowerCase('C'));
    //将字符转换为大写格式
    System.out.println("character1.toUpperCase(char1) = " +
                       character1.toUpperCase(char1));
  }
}