minvariablesdemo.java

初期JAVA学习非常有用的资料。帮助深入了解API。特别是Applet。

public class MinVariablesDemo {
    public static void main(String args[]) {

        // integers
        byte smallestByte = Byte.MIN_VALUE;
        short smallestShort = Short.MIN_VALUE;
        int smallestInteger = Integer.MIN_VALUE;
        long smallestLong = Long.MIN_VALUE;

        // real numbers
        float smallestFloat = Float.MIN_VALUE;
        double smallestDouble = Double.MIN_VALUE;

        // other primitive types
        char aChar = 'r';
        boolean aBoolean = false;

        // display them all
        System.out.println("The smallest byte value is " + smallestByte);
        System.out.println("The smallest short value is " + smallestShort);
        System.out.println("The smallest integer value is " + smallestInteger);
        System.out.println("The smallest long value is " + smallestLong);

        System.out.println("The smallest float value is " + smallestFloat);
        System.out.println("The smallest double value is " + smallestDouble);

        if (Character.isLowerCase(aChar)) {
            System.out.println("The character " + aChar + " is lower case.");
        } else {
            System.out.println("The character " + aChar + " is upper case.");
        }
        System.out.println("The value of aBoolean is " + aBoolean);
    }
}