类的构造过程实例

//InitializationTest.java

package foldConstructor;
// //父类的定义
class Parent {
 int pm1;

 int pm2 = 10;

 int pm3 = pmethod();
 {
  System.out.println("Parent's instance initialize block");
 }

 public static int spm1 = 10;
 static {
  System.out.println("Parent's static initialize block");
 }

 Parent() {
  System.out.println("Parent's default constructor");
 }

 static void staticmethod() {
  System.out.println("Parent's staticmethod");
 }

 int pmethod() {
  System.out.println("Parent's method");
  return 3;
 }
}

class Child extends Parent {
 int cm1;

 int cm2 = 10;

 int cm3 = cmethod();

 Other co;

 public static int scm1 = 10;
 {
  System.out.println("Child's instance initialize block");
 }
 static {
  System.out.println("Child's static initialize block");
 }

 Child() {
  co = new Other();
  System.out.println("Child's default constructor");
 }

 Child(int m) {
  this();
  cm1 = m;
  System.out.println("Child's self-define constructor");
 }

 static void staticmethod() {
  System.out.println("Child's staticmethod");
 }

 int cmethod() {
  System.out.println("Child's method");
  return 3;
 }

}

class Other {
 int om1;

 Other() {
  System.out.println("Other's default constructor");
 }

}

public class InitializationTest {
 public static void main(String args[]) {
  Child c;
  System.out.println("program start");
//  System.out.println(Child.scm1);
//  Child.staticmethod();
  c = new Child(10);
  Child.staticmethod();
  System.out.println("program end");
 }
}

//通过java的javap来反汇编：

// javap -c -classpath . Child