stringdemo.java

来自「有关java学习技巧的课件」· Java 代码 · 共 14 行

public class StringDemo { 
    public static void main(String[] args) { 
        String text = "hello"; 
 
        System.out.println("字符串内容:" + text); 
        System.out.println("字符串长度:" + text.length()); 
        System.out.println("等于hello?" + 
                                 text.equals("hello")); 
        System.out.println("转为大写:" + 
                                 text.toUpperCase()); 
        System.out.println("转为小写:" + 
                                 text.toLowerCase()); 
    } 
}