java父类，子类静态块和构造方法的执行顺序

package com.gulf.test;

public class Father {
	public Father(){
		System.out.println("父类构造方法");
	}
   static {
	   System.out.println("父类静态块");
   }
}

package com.gulf.test;

public class Son extends Father {
	public Son(){
		System.out.println("子类构造方法");
	}
	
	static{
		System.out.println("子类静态块");
	}
	
	public static void main(String[] args) {
		new Son();
		System.out.println("---第二次new对象---");
		new Son();
	}
	
}

package com.gulf.test;

public class StringTest {
	public static void main(String[] args) {
		String a = "123";
		String b = new String("123");
		String c = "12"+"3";
		
		System.out.println(a==b);
		System.out.println(a==c);
		System.out.println(b==c);
		System.out.println(b.equals(a));
	}

}

package com.gulf.test;

public class IntegerTest {
	public static void main(String[] args) {
		
		int i = 1;
		Integer j = 1;
		System.out.println(i == j);
		Integer m = 127;
		Integer n = 127;
		System.out.println(m == n);
		Integer k = 128;
		Integer h = 128;
		System.out.println(k == h);
		int x = 128;
		System.out.println(k == x);
		
	}

}