Java and Eclipse Common operations

Eclipse:

CTRL+F10 Display Line numbers

CTRL+SHIFT+F Automatic Alignment

ctrl+/notes

Java:

Jar Package: Manifest-version-Specifies the version number of the manifest file Main-class-Specifies the entry class that the program runs. Note: Do not add Class extension Class-path-Specifies the path of the support library. “.” Refers to the program run directory, which is the directory where the exported jar package resides. The program runs based on the setting path of the Class-path item to find the support library. Each support library is separated by a space. Here the Hibernate,spring,derby.java-jar ***.jar type conversion int i = Integer.parseint ([String]) is used; String s = string.valueof (i); Other conversions

String->byte byte static byte parsebyte (String s)

byte->string byte static string toString (Byte b)

char->string Character static string to string (char c)

String->short short static short Parseshort (String s)

short->string short Static String toString (short s)

String->integer Integer static int parseint (String s)

integer->string Integer static String tostring (int i)

String->long long Static long Parselong (String s)

long->string long static String toString (long i)

string->float float static float parsefloat (String s)

float->string float static String toString (float f)

String->double double static Double parsedouble (String s)

Java and Eclipse Common operations