reading values into variables using java

i,m very new to java how read values into variables using java and i want to know about Exception handling and about threads

well I can recommend read sun tutorials first and get some books. Just google it

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i,m very new to java how read values into variables

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it is called initialize variables ;)

int a=10; Something like that or String a="10";

Do you mean reading variables from the consol?

First, you need to add to the header (very very top, even above public class):

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import java.util.Scanner;

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then, in your main, add

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Scanner input = new Scanner(System.in);

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to read variable input from the consol, follow this example:

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int a = input.nextInt()

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to change the type of thing to read use next() for strings and nextFloat() for floats (be sure to change the variable type as well!)