Conversion between bases in java

//Convert decimal to other bases

Integer.toHexString(10); //Convert 10 to hexadecimal and return the string type

Integer.toOctalString(10); //Convert 10 to octal and return String type

Integer.toBinaryString(10); //Convert 10 to binary and return string type

//Convert other bases to decimal

//Convert hexadecimal to decimal, for example: 0xFFFF

Integer.valueOf("FFFF",16).toString(); //The valueOf() method returns the Integer type, and calling toString() returns the string

Integer.parseInt("FFFF",16); // Returns the int basic data type

Integer.toString(0xFFFF); //This method can directly pass in the basic data type representing hexadecimal numbers, and the method returns a string

//Convert octal to decimal, for example: 017

Integer.valueOf("17",8).toString(); //The valueOf() method returns the Integer type, and calling toString() returns a string

Integer.parseInt("17",8); //Return int basic data type

Integer.toString(017); //This method can directly pass in the basic data type representing octal numbers, and the method returns a string

//Convert binary to decimal, for example: 0101

Integer. valueOf("0101",2).toString(); //The valueOf() method returns the Integer type, and calling toString() returns a string

Integer.parseInt("0101",2); //Returns the int basic data type

//For conversion between binary, octal and hexadecimal, you can first convert to decimal, and then use the corresponding method of converting from decimal to multi-decimal for conversion

//For example, convert hexadecimal 0xFF For binary

Integer.toBinaryString(Integer.valueOf("FF",16));

//or

Integer.toBinaryString(Integer.parseInt("FF",16));

//For To input a string representing hexadecimal, you need to intercept the numeric substring first, and then use the valueOf() or parseInt() method to convert it to decimal

//For example, enter 0xFF

String s = "0xFF";

Integer.valueOf(s.subString(2,s.length()),16);

//For the valueOf method, it can be used for boxing of basic data types and conversion between polydecimal and decimal.