wrapper classes in Java

Wrapper type for eight basic data types in Java: Basic data type wrapper type Bytejava.lang.byte;shortjava.lang.short;intjava.lang.integer;longjava.lang.long ;floatjava.lang.float;double      java.lang.double;booleanjava.lang.boolean; charjava.lang.character;/* to the Java.lang.Integer; type for example, to explain eight kinds of types. */public class integertest02{public static void main (String[] args) {// Gets the maximum and minimum values of type int System.out.println ("int min:"  + integer.min_value); SYSTEM.OUT.PRINTLN ("int max:"  + integer.max_value);//push byteSystem.out.println with int ("Byte min:"  +  byte.min_value); System.out.println ("Byte max:"  + byte.max_value);//Create an object of type integer integer i1 = new  integer ( //int--> integerinteger i2 = new integer),  //("123"); String --> integersystem.out.println (I1);  //10system.out.println (I2);  //123//The following program compilation can be passed. However, it is reported as abnormal when running. Numeric formatting exceptions.//Although you can convert a string to an Integer type, the string must also be a "numeric string."//integer i3 = new  Integer ("ABCD");  //numberformatexceptioninteger Common Method:public class intergertest{     public static void main (String[] args) {    //int--" interger  Basic Data Type-"reference data type     interger i1=new integer (TEN);     integer i1=integer.valueof (Ten);    //    int i2=  I1.intvalue ();    //string-->integer    integer i3=new  Integer ("ten");     integer i4=integer.valueof ("Ten");    //**  string-("Int    int i4=integer.parseint");     //*****string- >>double    double i5=double.parsedouble ("30.111");//convert decimal of type int to 16 binary string  s2 = integer.tohexstring (10); SYSTEM.OUT.PRINTLN (S2);  //a//converts decimal of type int to 8 binary string s3 = integer.tooctalstRing (10); System.out.println (S3);  //12     }}

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wrapper classes in Java