How to keep two decimal places in java

How to retain two decimal places in java: 1. Use DecimalFormat; 2. Use the String.format method.

To retain two decimal places in Java, you can use the DecimalFormat class or the String.format method.

1. The sample code for using the DecimalFormat class is as follows:

import java.text.DecimalFormat;
public class Main {
public static void main(String[] args) {
double number = 3.1415926;
DecimalFormat decimalFormat = new DecimalFormat("#.##");
String formattedNumber = decimalFormat.format(number);
System.out.println("Formatted number: " + formattedNumber);
}
}
输出结果为：Formatted number: 3.14

2. The sample code for using the String.format method is as follows:

public class Main {
public static void main(String[] args) {
double number = 3.1415926;
String formattedNumber = String.format("%.2f", number);
System.out.println("Formatted number: " + formattedNumber);
}
}
输出结果为：Formatted number: 3.14

In the above example code, a double type variable number is first defined to represent the original number. Then format the number through the DecimalFormat class or the String.format method, using "%.2f" to indicate retaining two decimal places. Finally, print out the formatted results .

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