Java 中的 NumberFormat setParseIntegerOnly()方法，带示例

原文:https://www . geeksforgeeks . org/number format-setparsentegeronly-method-in-Java-with-examples/

setParseIntegerOnly() 方法是 java.text.NumberFormat 的内置方法，该方法设置数字是否只应被解析为整数。

语法:

public void setParseIntegerOnly(boolean val)

参数:该功能接受一个强制参数值，该值指定要设置的值

返回值:该函数不返回任何内容，因此返回类型为 void。

下面是上述功能的实现:

程序 1 :

// Java program to implement
// the above function

import java.text.NumberFormat;
import java.util.Locale;
import java.util.Currency;

public class Main {
    public static void main(String[] args)
        throws Exception
    {

        NumberFormat nF
            = NumberFormat.getNumberInstance();

        System.out.println("set initially as: "
                           + nF.isParseIntegerOnly());

        // Set grouping
        nF.setParseIntegerOnly(false);

        // Print the final
        System.out.println("set finally as: "
                           + nF.isParseIntegerOnly());
    }
}

输出:

set initially as: false
set finally as: false

程序二:

// Java program to implement
// the above function

import java.text.NumberFormat;
import java.util.Locale;
import java.util.Currency;

public class Main {
    public static void main(String[] args)
        throws Exception
    {

        NumberFormat nF
            = NumberFormat.getNumberInstance();

        System.out.println("set initially as: "
                           + nF.isParseIntegerOnly());

        // Set grouping
        nF.setParseIntegerOnly(true);

        // Print the final
        System.out.println("set finally as: "
                           + nF.isParseIntegerOnly());
    }
}

输出:

set initially as: false
set finally as: true

参考:https://docs . Oracle . com/javase/10/docs/API/Java/text/number format . html # setParseIntegerOnly(布尔型)

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