模板:
- Split string into parts based on new line in java
Solution: Reference is .
1)
- get out of the first part of a string until meet "<"
Solution: Reference is .
1) s = "boo:and:foo"; String[] result = s.split(":") ; => {"boo", "and", "foo"}
2) s = "boo:and:foo"; String[] result = s.split(":", 2) ; => {"boo", "and:foo"}
3) s = "boo.and.foo"; String[] result = s.split("\\.", 2) ; => {"boo", "and.foo"}
- Split string into parts based on new line in java
Solution: Reference is .
1)
String lines[] = string.split("\\r?\\n");
- Convert Long in int in java
Solution:
1)
int result = (int) longVar;
- Copy file to another folder in java
Solution: Reference is . copy(Path source, Path target)
1)
Path source = Paths.get("/Users/apple/Desktop/test.rtf");Path destination = Paths.get("/Users/apple/Desktop/copied.rtf");Files.copy(source, destination);
- File into a String in java
Solution: Reference is . Files.readAllBytes(Path source)
1)
String filePath = "c:/temp/data.txt";String content = new String ( Files.readAllBytes( Paths.get(filePath) ) );
- Path String to File in java
Solution:
1)
String filePath = "c:/temp/data.txt";File file = new File (filePath );
- Join path in java
Solution: Reference is .
1) Use Paths.get(String parentPath, args)
import java.nio.file.Path; import java.nio.file.Paths; Path currentPath = Paths.get(System.getProperty("user.dir"));Path filePath = Paths.get(currentPath.toString(), "data", "foo.txt"); output is "
/Users/user/coding/data/foo.txt
"
2) Use File(String parentPath, fileName)
import java.io.FileFile file = new File(parentPath, fileName);System.out.println(file.getAbsolutePath());
- Get epoch time in java (present a unique Id by numbers if the time is not in the same ms)
Solution: Reference is .
1)
long epoch = System.currentTimeMillis();String Id = Long.toString(epoch);
- Create a path from String in java
Solution: Reference is .
1)
import java.nio.file.Paths;Path path = Paths.get(textPath);