java学习（86）：Interage方法compareto，parseint，intvalue

public class test22 { public static void main(String[] args){ int num5; Integer obj1new Integer(num); System.out.println(obj1的值为obj1); Integer obj2100; System.out.println(obj2的值为obj2); Integer obj3new Integer(-789); System.out.println(obj3的值为obj3); System.out.println(Integer.BYTES); System.out.println(Integer.MAX_VALUE); System.out.println(Integer.MIN_VALUE); System.out.println(Integer.SIZE); //比较大小 System.out.println(obj2.compareTo(100)); System.out.println(obj2.compareTo(102)); System.out.println(obj2.compareTo(10)); //返回值类型 int num1obj2.intValue(); System.out.println(num1); //将一个字符串转换为int数据返回 int str1Integer.parseInt(125); System.out.println(str112); } }运行结果