SoftwareStudioMid-13.java

class XIII {
    public static void main (String[] args) {
        StringBuffer s1, s2, s3;
        s1 = new StringBuffer("Hello");
        s2 = s1;
        s1.append(" the Java master!");
        s3 = new StringBuffer("Hello the Java master!");
        
        // 比較法一
        System.out.println(s1.toString().compareTo(s2.toString()) == 0);
        System.out.println(s1.toString().compareTo(s3.toString()) == 0);
        System.out.println(s2.toString().compareTo(s3.toString()) == 0);
        // 比較法二
        System.out.println(s1.toString().equals(s2.toString()));
        System.out.println(s1.toString().equals(s3.toString()));
        System.out.println(s2.toString().equals(s3.toString()));
    }
}