在Java中显示数据类型的默认初始值
要显示数据类型的默认初始值，您只需要声明一个相同数据类型的变量并显示它即可。
以下是一个Java程序，用于显示DataTypes的初始值。
示例
public class Demo {
boolean t;
byte b;
short s;
int i;
long l;
float f;
double d;
void Display() {
System.out.println("boolean (Initial Value) = " + t);
System.out.println("byte (Initial Value) = " + b);
System.out.println("short (Initial Value) = " + s);
System.out.println("int (Initial Value) = " + i);
System.out.println("long (Initial Value) = " + l);
System.out.println("float (Initial Value) = " + f);
System.out.println("double (Initial Value) = " + d);
}
public static void main(String[] args) {
Demo d = new Demo();
System.out.println("Displaying initial values...");
d.Display();
}
}输出结果
Displaying initial values... boolean (Initial Value) = false byte (Initial Value) = 0 short (Initial Value) = 0 int (Initial Value) = 0 long (Initial Value) = 0 float (Initial Value) = 0.0 double (Initial Value) = 0.0
在上面的程序中，我们声明了一个具有不同数据类型的变量。
boolean t; byte b; short s; int i; long l; float f; double d;
现在，要获取默认的初始值，只需打印上面声明的变量即可。
System.out.println("boolean (Initial Value) = " + t);
System.out.println("byte (Initial Value) = " + b);
System.out.println("short (Initial Value) = " + s);
System.out.println("int (Initial Value) = " + i);
System.out.println("long (Initial Value) = " + l);
System.out.println("float (Initial Value) = " + f);
System.out.println("double (Initial Value) = " + d);上面显示了默认值。