Java中char[]输出不是内存地址的原因详解

public class Test {
 public static void main(String[] args){
 System.out.println("8种基本数据类型");
 int a=5;
 System.out.println(a);
 char b='z';
 System.out.println(b);
 boolean d=false;
 System.out.println(d);
 byte e=3;
 System.out.println(e);
 short f=4;
 System.out.println(f);
 long g=32000000;
 System.out.println(g);
 float h=5;
 System.out.println(h);
 double i=6;
 System.out.println(i);
 }
}

8种基本数据类型
5
z
false
3
4
32000000
5.0
6.0

int a=1;

Employee a=new Emploee(1.4);

public class Wrapper {
 static class Employee{
 static int age;
 Employee(int a){
  age=a;
 }
 }
 static class Employer{
 static int year;
 Employer (int y){
  year=y;
 }
 @Override
 public String toString() {
  return "Employer's year="+year;
 }
 }
 public static void main(String[] args){
 Employee e=new Employee(4);
 System.out.println("e="+e);
 Employer f=new Employer(5);
 System.out.println("f="+f);
 }
}

e=Wrapper$Employee@1b6d3586
f=Employer's year=5

private final double value;
public String toString() {
 return toString(value);
 }

byte a=128;

public class TestOne {
 public static void main(String[] args) {
 int a=127;
 System.out.println(a);
 int[] b=new int[]{1,2,3};
 System.out.println(b);
 int[] c=new int[100];
 System.out.println(c);
 int[] d={1,2,3};
 System.out.println(d);
 boolean e=false;
 System.out.println(e);
 boolean[] f={false,false,true};
 System.out.println(f);
 char g='a';
 System.out.println(g);
 char[] h={'a','b','c'};
 System.out.println(h);
 char[] i=new char[]{'a','b','c'};
 System.out.println(i);
 float j=1.2f;
 System.out.println(j);
 float[] k={1.2f,1.3f,1.4f};
 System.out.println(k);
 }
}

127
[I@15db9742
[I@6d06d69c
[I@7852e922
false
[Z@4e25154f
a
abc
abc
1.2
[F@70dea4e

public void print(char c) {
 write(String.valueOf(c));
 }

private void write(String s) {
 try {
  synchronized (this) {
  ensureOpen();
  textOut.write(s);
  textOut.flushBuffer();
  charOut.flushBuffer();
  if (autoFlush && (s.indexOf('\n') >= 0))
   out.flush();
  }
 }
 catch (InterruptedIOException x) {
  Thread.currentThread().interrupt();
 }
 catch (IOException x) {
  trouble = true;
 }
 }

public void println(Object x) {
  String s = String.valueOf(x);
  synchronized (this) {
   print(s);
   newLine();
  }
 }

public static String valueOf(Object obj) {
  return (obj == null) ? "null" : obj.toString();
 }

public String toString() {
  return getClass().getName() + "@" + Integer.toHexString(hashCode());
 }

public void println(char x[]) {
  synchronized (this) {
   print(x);
   newLine();
  }
 }

public void print(char s[]) {
  write(s);
 }

private void write(char buf[]) {
  try {
   synchronized (this) {
    ensureOpen();
    textOut.write(buf);
    textOut.flushBuffer();
    charOut.flushBuffer();
    if (autoFlush) {
     for (int i = 0; i < buf.length; i++)
      if (buf[i] == '\n')
       out.flush();
    }
   }
  }
  catch (InterruptedIOException x) {
   Thread.currentThread().interrupt();
  }
  catch (IOException x) {
   trouble = true;
  }
 }