Solution:
1.
For converting numeric string into double number the statement is
double i=Double.parseDouble("-101.90");
double i=Double.parseDouble("102.9");
2.
For second question
String address="yuan"
String expression=address+"@google.com";
3.
For third question the output is Test12 Here "Test"+1+2 is nothing but concatenating or joining the strings
For better understanding see the below code snippet:
import java.util.Scanner;
public class Pattern
{
public static void main(String args[])
{
Scanner
input=new Scanner(System.in);
//first question
solution
double
negative_num=Double.parseDouble("-101.90"); //converting number to
double
double
positive_num=Double.parseDouble("102.9");
System.out.printf("Converting string '-101.90' into number %.2f\n"
,negative_num);
System.out.printf("Converting string '102.9' into number %.2f\n"
,positive_num);
//solution
for second question
System.out.print("Enter address: ");
String
address=input.nextLine(); //taking address from user
String
final_output=address+"@google.com"; //concatenating with
string
System.out.printf("%s\n",final_output);
//solution
for third question
System.out.println("Test"+1+2); //evaluating the expression
}
}
Code and Output Screenshots:
Note: if you have any queries please post a comment thanks a lot.always available to help you...
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