1, the string comparison
1) When two strings if they are identical, returns 0
2) When two strings, e.g. ccc and cccbbb, cccbbb compared with ccc: 3; returns the length difference of the two strings
3) When two strings, e.g. ccc ddd than the result of: 1, to return the difference values of the two ascii characters , there is a difference of a value of ascii d and c.
2, Integer comparison:
1) comparison of two numbers: the same, return 0 ;
2) a first large number, a return, a first small number, return -1 ;
3, Code Share:
{class CompareToTest public
public static void main (String [] args) {
// string of the same length
String S1 = "ddd";
String S2 = "ccc";
System.out.println ( "ccc ddd than the result of: "+ s1.compareTo (S2));
System.out.println (" ccc ddd than the result is: "+ s2.compareTo (S1));
// ccc ddd than the result is:. 1
// ccc ddd ratio of results: -1
// string while the length
string S3 = "cccbbb";
string S4 = "cccdddd";
System.out.println ( "cccbbb compared CCC:" + s3.compareTo (S2));
the System. out.println ( "ccc compared cccdddd:" + s2.compareTo (s4) );
// cccbbb compared with ccc: 3
Compare // ccc and cccbbb: -3
compare // ccc and cccddd: -4
String S5 = "A";
System.out.println ( "a comparison with cccbbb:" + s5.compareTo (S3));
String S6 = "A";
System.out.println ( "a comparison with a:" + s5.compareTo (s6) ) ;
Integer I = 1;
Integer I2 = 11;
System.out.println ( "comparison 1 and 11:" + i.compareTo (I2));
System.out.println ( "comparison 1 and 11:" + i2.compareTo (I));
Integer I3 = 90;
System.out.println ( "comparison 1 and 90:" + i3.compareTo (I));
Integer I4 = 90;
System.out.println ( "90 compared to 90:" i4.compareTo + (I3));
Integer i5 = 1;
System.out.println ( "comparison 1 and 1:" + i5.compareTo (i)) ;
11 @ 1 and Comparison: -1
// 11 and Comparison 1: 1
@ 90 and Comparison 1: 1
// 90 compared with 90: 0
// 1 and Comparison 1: 0
}
}
result:
ccc ddd than the result is:. 1
ccc ddd than the result is: -1
cccbbb compared ccc:. 3
ccc compared cccdddd: -4
A Comparison and cccbbb: -2
A compared with A: 0
. 1 and Comparison 11: -1
1 compared with 11: 1
90 Comparative 1: 1
90 90 comparison: 0
1 and comparison 1: 0
