Some common methods for sharing strings in Java
- 2020-04-01 02:58:42
- OfStack
1. Some common methods of strings in Java
package com.you.model;
public class Replace {
public static void main(String[] args)
{
String str = "78454545855ksdjnf dnfdksf klkADE TGTH eiru oaK L!@@$#%$^*&(*()()><?<>>>";
str = str.concat(str);
System.out.println(" For the first time, concat() : " + str);
System.out.println();
str = str.intern();
System.out.println(" The second time intern():" + str);
System.out.println();
str = str.replace("8", " Make a fortune ");
System.out.println(" The third time replace('',''):" + str);
System.out.println();
str = str.replaceAll("f", " amitabha ");
System.out.println(" For the fourth time replaceAll('',''):" + str);
System.out.println();
str = str.replaceFirst("7", " Seventy-seven forty-nine days ");
System.out.println(" The fifth time replaceFirst('','') : " + str);
System.out.println();
str = str.substring(20);
System.out.println(" The sixth time substring() : " + str);
System.out.println();
str = str.substring(25, 35);
System.out.println(" The seventh time substring(0,10) : " + str);
System.out.println();
str = str.toLowerCase();
System.out.println(" The eighth toLowerCase() : " + str);
System.out.println();
str = str.toUpperCase();
System.out.println(" The ninth toUpperCase() : " + str);
System.out.println();
str = str.trim();
System.out.println(" The tenth trim() : " + str);
System.out.println();
int len = str.length();
System.out.println(" The 11th length() : " + len);
}
}
2, the results
For the first time, concat() : 78454545855ksdjnf dnfdksf klkADE TGTH eiru oaK L!@@$#%$^*&(*()()><?<>>>78454545855ksdjnf dnfdksf klkADE TGTH eiru oaK L!@@$#%$^*&(*()()><?<>>>
The second time intern():78454545855ksdjnf dnfdksf klkADE TGTH eiru oaK L!@@$#%$^*&(*()()><?<>>>78454545855ksdjnf dnfdksf klkADE TGTH eiru oaK L!@@$#%$^*&(*()()><?<>>>
The third time replace('',''):7 Make a fortune 454545 Make a fortune 55ksdjnf dnfdksf klkADE TGTH eiru oaK L!@@$#%$^*&(*()()><?<>>>7 Make a fortune 454545 Make a fortune 55ksdjnf dnfdksf klkADE TGTH eiru oaK L!@@$#%$^*&(*()()><?<>>>
For the fourth time replaceAll('',''):7 Make a fortune 454545 Make a fortune 55ksdjn amitabha dn amitabha dks amitabha klkADE TGTH eiru oaK L!@@$#%$^*&(*()()><?<>>>7 Make a fortune 454545 Make a fortune 55ksdjn amitabha dn amitabha dks amitabha klkADE TGTH eiru oaK L!@@$#%$^*&(*()()><?<>>>
The fifth time replaceFirst('','') : seventy-seven forty-nine days to make a fortune 454545 Make a fortune 55ksdjn amitabha dn amitabha dks amitabha klkADE TGTH eiru oaK L!@@$#%$^*&(*()()><?<>>>7 Make a fortune 454545 Make a fortune 55ksdjn amitabha dn amitabha dks amitabha klkADE TGTH eiru oaK L!@@$#%$^*&(*()()><?<>>>
The sixth time substring() : djn amitabha dn amitabha dks amitabha klkADE TGTH eiru oaK L!@@$#%$^*&(*()()><?<>>>7 Make a fortune 454545 Make a fortune 55ksdjn amitabha dn amitabha dks amitabha klkADE TGTH eiru oaK L!@@$#%$^*&(*()()><?<>>>
The seventh time substring(0,10) : ADE TGTH e
The eighth toLowerCase() : ade tgth e
The ninth toUpperCase() : ADE TGTH E
The tenth trim() : ADE TGTH E
The 11th length() : 10