Strings to decimal in Java

Question

How I can get a decimal number from string to use it for calculations and math ? using android studio ( Java )

String a = "0.1234"
String b = "0.4321"
total = a * b 

Answer 1

you can try

Float.valueOf(String)

Answer 2

You can do as Arju said or alternative is to parseFloat

float floatA = Float.parseFloat(a);
float floatB = Float.parseFloat(b);
float total = floatA*floatB;

Answer 3

This will do:

String a = "0.1234"
float aFloat = Float.parseFloat(a);

String b = "0.4321"
float bFloat = Float.parseFloat(b);

total = aFloat * bFloat

This might throw a NumberFormatException, so you will have to put it in a try block.