characterdemo.java

Eclipse程序设计经典教程+源代码 学习java的朋友可以看看

package character;

public class CharacterDemo {
  
  public static void main(String[] args) {
    char char1 = 'a';
    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.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('A') = " +
                       character1.toLowerCase('A'));
    //将字符转换为大写格式
    System.out.println("character1.toUpperCase(char1) = " +
                       character1.toUpperCase(char1));
      
  }
}