Relational Operators for Strings

hi
i wanted to know if there is some way to get relational operators for strings like you have for numbers (!=,<,>,ect).
i already know of the .equals()
what about the string equivalent of != ? or < and >
i was thinking .codePointAt() with int relational operators could work for </> but thats clunky and still doesn't fix the problem of lack of !=
i want to know this so i can alphabetize a list of strings; any information about a string organizing method would be helpful also
thanks

The API answers all of that for you, but are you serious about "!=" ?
If you know that "==" (not "=") is "translated" to a.equals(b) then you should know how to translate "!=".
If not, then try this: !a.equals(b)Keep in mind that comparison operations in Java are not magical "desidors", but rather simply evaluate into a boolean value. You can do whatever you want with this boolean value, including negating it.
So if you've got two int variables a and b, then "a != b" and "!(a == b)" will have the same result.

Similar Messages

Problem Using Relational Operators !!

The code given under is not working corretly. The problem is stated as comments in the program.
if(result.next())
String temp_no=t_no.getText();
String temp_nm=t_name.getText();
String temp_result1= result.getString(2);
String temp_result2= result.getString(3);
if(temp_no!=temp_result1) // The condition is always true.Even if i give the same no & name as in database!! Why is it so?
JOptionPane.showMessageDialog(cdFrame, new String("There Is No Disc With The Specified Number !!"));
else
if(temp_nm!=temp_result2)
JOptionPane.showMessageDialog(cdFrame, new String("There Is No Disc With The Specified Name !!"));
else
upd.executeUpdate();
JOptionPane.showMessageDialog(cdFrame, new String("DATA HAS BEEN UPDATED !!"));
else
JOptionPane.showMessageDialog(cdFrame, new String("There Is No Such Disc As Stated In Old Data !!"));
} The Program compiles properly and gives no runtime error. What's the problem!!

yes dude, u can't use relational operators for objects.. its works only on simple data types..

Program for string comparision in ABAP

Hi,
I require a program in abap for string comparision

Comparing Strings
Similarly to the special statements for processing strings, there are special comparisons that you can apply to strings with types C, D, N, and T. You can use the following operators:
<operator>
Meaning
CO
Contains Only
CN
Contains Not only
CA
Contains Any
NA
contains Not Any
CS
Contains String
NS
contains No String
CP
Contains Pattern
NP
contains No Pattern
There are no conversions with these comparisons. Instead, the system compares the characters of the string. The operators have the following functions:
CO (Contains Only)
The logical expression
<f1> CO <f2>
is true if <f1> contains only characters from <f2>. The comparison is case-sensitive. Trailing blanks are included. If the comparison is true, the system field SY-FDPOS contains the length of <f1>. If it is false, SY-FDPOS contains the offset of the first character of <f1> that does not occur in <f2> .
CN (Contains Not only)
The logical expression
<f1> CN <f2>
is true if <f1> does also contains characters other than those in <f2>. The comparison is case-sensitive. Trailing blanks are included. If the comparison is true, the system field SY-FDPOS contains the offset of the first character of <f1> that does not also occur in <f2>. If it is false, SY-FDPOS contains the length of <f1>.
CA (Contains Any)
The logical expression
<f1> CA <f2>
is true if <f1> contains at least one character from <f2>. The comparison is case-sensitive. If the comparison is true, the system field SY-FDPOS contains the offset of the first character of <f1> that also occurs in <f2> . If it is false, SY-FDPOS contains the length of <f1>.
NA (contains Not Any)
The logical expression
<f1> NA <f2>
is true if <f1> does not contain any character from <f2>. The comparison is case-sensitive. If the comparison is true, the system field SY-FDPOS contains the length of <f1>. If it is false, SY-FDPOS contains the offset of the first character of <f1> that occurs in <f2> .
CS (Contains String)
The logical expression
<f1> CS <f2>
is true if <f1> contains the string <f2>. Trailing spaces are ignored and the comparison is not case-sensitive. If the comparison is true, the system field SY-FDPOS contains the offset of <f2> in <f1> . If it is false, SY-FDPOS contains the length of <f1>.
NS (contains No String)
The logical expression
<f1> NS <f2>
is true if <f1> does not contain the string <f2>. Trailing spaces are ignored and the comparison is not case-sensitive. If the comparison is true, the system field SY-FDPOS contains the length of <f1>. If it is false, SY-FDPOS contains the offset of <f2> in <f1> .
CP (Contains Pattern)
The logical expression
<f1> CP <f2>
is true if <f1> contains the pattern <f2>. If <f2> is of type C, you can use the following wildcards in <f2>:
for any character string *
for any single character +
Trailing spaces are ignored and the comparison is not case-sensitive. If the comparison is true, the system field SY-FDPOS contains the offset of <f2> in <f1> . If it is false, SY-FDPOS contains the length of <f1>.
If you want to perform a comparison on a particular character in <f2>, place the escape character # in front of it. You can use the escape character # to specify
characters in upper and lower case
the wildcard character "" (enter # )
the wildcard character "" (enter # )
the escape symbol itself (enter ## )
blanks at the end of a string (enter #___ )
NP (contains No Pattern)
The logical expression
<f1> NP <f2>
is true if <f1> does not contain the pattern <f2>. In <f2>, you can use the same wildcards and escape character as for the operator CP.
Trailing spaces are ignored and the comparison is not case-sensitive. If the comparison is true, the system field SY-FDPOS contains the length of <f1>. If it is false, SY-FDPOS contains the offset of <f2> in <f1> .
DATA: F1(5) TYPE C VALUE <f1>,
      F2(5) TYPE C VALUE <f2>.
IF F1 <operator> F2.
   WRITE: / 'Comparison true, SY-FDPOS=', SY-FDPOS.
ELSE.
   WRITE: / 'Comparison false, SY-FDPOS=', SY-FDPOS.
ENDIF.
The following table shows the results of executing this program, depending on which operators and values of F1 and F2.
<f1>
<operator>
<f2>
Result
SY-FDPOS
'BD '
CO
'ABCD '
true
5
'BD '
CO
'ABCDE'
false
2
'ABC12'
CN
'ABCD '
true
3
'ABABC'
CN
'ABCD '
false
5
'ABcde'
CA
'Bd '
true
1
'ABcde'
CA
'bD '
false
5
'ABAB '
NA
'AB '
false
0
'ababa'
NA
'AB '
true
5
'ABcde'
CS
'bC '
true
1
'ABcde'
CS
'ce '
false
5
'ABcde'
NS
'bC '
false
1
'ABcde'
NS
'ce '
true
5
'ABcde'
CP
'b'
true
1
'ABcde'
CP
'#b'
false
5
'ABcde'
NP
'b'
false
1
'ABcde'
NP
'#b'
true
5
goto sap library if intsalled in ur system and check the above one....

ORA-13223: duplicate entry for string in SDO_GEOM_METADATA table and

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SQL> select * from mdsys.sdo_geom_metadata_table;
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8307
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GEOM
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SDO_OWNER SDO_TABLE_NAME
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Charles
<code> should be
Edited by: Don Williams on Feb 4, 2011 12:47 PM

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