java---Common basic data structure conversion

<一>String to Long, long

String s = "1";
long l = Long.parseLong(s);
Long ll = Long.valueOf(s);

 <一>long to String

long l = 10;
String s = String.valueOf(l);
System.out.println(s);

 

<1>Integer to String

thirdTaskProgress.getStatus() + ""

 <1> int to Integer

int i = 0;  
Integer wrapperi = new Integer(i);  

 

  <一> Integer to int

Integer wrapperi = new Integer(0);  
int i = wrapperi.intValue(); 

 

   <1> int to String

int m = 5;
String str1 = String.valueOf(m);

   <1> String to int

String str = "10";
int s=Integer.parseInt(str);

 

   <one> long to int

long l =10;
int i =(int)l;

   <one> int to long

int i=10;
long l =(long)i;

 

 <一>int转double

int i = 10;
double d = (double) i;

 <1> The basic data types from double to int can be coerced

double d =10.d;
int i =(int) d;
System.out.println(i);