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Java：如何将数据添加到对象中？

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Java：如何将数据添加到对象中？,java,string,object,constructor,add,Java,String,Object,Constructor,Add,我是Java新手。如何将字符串数据添加到对象“myData”中，并在main中打印出其内容 public class myData { static String[] myArray = new String[] { "Mimi Rudolph", "minirudolph" }; public static String[] cutName(String string) { return string.split(" "); } String[] fullName

我是Java新手。如何将字符串数据添加到对象“
myData
”中，并在main中打印出其内容

public class myData {
  static String[] myArray = new String[] { "Mimi Rudolph", "minirudolph" };

  public static String[] cutName(String string) {
    return string.split(" ");
  }

  String[] fullName = cutName(myArray[0]);
  String skype = myArray[1];
  String github = null;
  Object myData = new Object();

  public myData(String[] fullName, String skype, String github) {
    this.fullName = fullName;
    this.skype = skype;
    this.github = github;
  }

  public static void main(String[] args) {

    Object myData = new Object();
  }
}
您只需创建类的实例
myData
，如下所示：

public static void main(String[] args) {
    myData myData = new myData(myArray, "skype", "github");
    ...
}
要打印其内容，可以覆盖方法
toString（）
，例如：

@Override
public String toString() {
    return "myData{" +
        "fullName=" + Arrays.toString(fullName) +
        ", skype='" + skype + '\'' +
        ", github='" + github + '\'' +
        ", myData=" + myData +
        '}';
}

public class myData {
    ...
    @Override
    public String toString() {
        ...
    }

    public static void main(String[] args) {
        myData myData = ...
        System.out.println(myData);
    }
}

public class MyData {

private static final String[] myArray = new String[]{"Mimi Rudolph", "minirudolph"};

String[] fullName = cutName(myArray[0]);
String skype = myArray[1];
String github = null;
Object myData = new Object();

private static String[] cutName(String string) {
    return string.split(" ");
}

public MyData(String[] fullName, String skype, String github) {
    this.fullName = fullName;
    this.skype = skype;
    this.github = github;
}

public static void main(String[] args) {
    MyData myData = new MyData(myArray, "Skype string goes here", "githun string goes here");
    System.out.println(myData.fullName);
    System.out.println(myData.github);
    System.out.println(myData.skype);
}
}
然后，您将能够使用
System.out.println（myData）
打印其内容

最后的代码如下所示：

@Override
public String toString() {
    return "myData{" +
        "fullName=" + Arrays.toString(fullName) +
        ", skype='" + skype + '\'' +
        ", github='" + github + '\'' +
        ", myData=" + myData +
        '}';
}

public class myData {
    ...
    @Override
    public String toString() {
        ...
    }

    public static void main(String[] args) {
        myData myData = ...
        System.out.println(myData);
    }
}

public class MyData {

private static final String[] myArray = new String[]{"Mimi Rudolph", "minirudolph"};

String[] fullName = cutName(myArray[0]);
String skype = myArray[1];
String github = null;
Object myData = new Object();

private static String[] cutName(String string) {
    return string.split(" ");
}

public MyData(String[] fullName, String skype, String github) {
    this.fullName = fullName;
    this.skype = skype;
    this.github = github;
}

public static void main(String[] args) {
    MyData myData = new MyData(myArray, "Skype string goes here", "githun string goes here");
    System.out.println(myData.fullName);
    System.out.println(myData.github);
    System.out.println(myData.skype);
}
}
您只需创建类的实例
myData
，如下所示：

public static void main(String[] args) {
    myData myData = new myData(myArray, "skype", "github");
    ...
}
要打印其内容，可以覆盖方法
toString（）
，例如：

@Override
public String toString() {
    return "myData{" +
        "fullName=" + Arrays.toString(fullName) +
        ", skype='" + skype + '\'' +
        ", github='" + github + '\'' +
        ", myData=" + myData +
        '}';
}

public class myData {
    ...
    @Override
    public String toString() {
        ...
    }

    public static void main(String[] args) {
        myData myData = ...
        System.out.println(myData);
    }
}

public class MyData {

private static final String[] myArray = new String[]{"Mimi Rudolph", "minirudolph"};

String[] fullName = cutName(myArray[0]);
String skype = myArray[1];
String github = null;
Object myData = new Object();

private static String[] cutName(String string) {
    return string.split(" ");
}

public MyData(String[] fullName, String skype, String github) {
    this.fullName = fullName;
    this.skype = skype;
    this.github = github;
}

public static void main(String[] args) {
    MyData myData = new MyData(myArray, "Skype string goes here", "githun string goes here");
    System.out.println(myData.fullName);
    System.out.println(myData.github);
    System.out.println(myData.skype);
}
}
然后，您将能够使用
System.out.println（myData）
打印其内容

最后的代码如下所示：

@Override
public String toString() {
    return "myData{" +
        "fullName=" + Arrays.toString(fullName) +
        ", skype='" + skype + '\'' +
        ", github='" + github + '\'' +
        ", myData=" + myData +
        '}';
}

public class myData {
    ...
    @Override
    public String toString() {
        ...
    }

    public static void main(String[] args) {
        myData myData = ...
        System.out.println(myData);
    }
}

public class MyData {

private static final String[] myArray = new String[]{"Mimi Rudolph", "minirudolph"};

String[] fullName = cutName(myArray[0]);
String skype = myArray[1];
String github = null;
Object myData = new Object();

private static String[] cutName(String string) {
    return string.split(" ");
}

public MyData(String[] fullName, String skype, String github) {
    this.fullName = fullName;
    this.skype = skype;
    this.github = github;
}

public static void main(String[] args) {
    MyData myData = new MyData(myArray, "Skype string goes here", "githun string goes here");
    System.out.println(myData.fullName);
    System.out.println(myData.github);
    System.out.println(myData.skype);
}
}
我想你正在寻找这样的东西：

@Override
public String toString() {
    return "myData{" +
        "fullName=" + Arrays.toString(fullName) +
        ", skype='" + skype + '\'' +
        ", github='" + github + '\'' +
        ", myData=" + myData +
        '}';
}

public class myData {
    ...
    @Override
    public String toString() {
        ...
    }

    public static void main(String[] args) {
        myData myData = ...
        System.out.println(myData);
    }
}

public class MyData {

private static final String[] myArray = new String[]{"Mimi Rudolph", "minirudolph"};

String[] fullName = cutName(myArray[0]);
String skype = myArray[1];
String github = null;
Object myData = new Object();

private static String[] cutName(String string) {
    return string.split(" ");
}

public MyData(String[] fullName, String skype, String github) {
    this.fullName = fullName;
    this.skype = skype;
    this.github = github;
}

public static void main(String[] args) {
    MyData myData = new MyData(myArray, "Skype string goes here", "githun string goes here");
    System.out.println(myData.fullName);
    System.out.println(myData.github);
    System.out.println(myData.skype);
}
}
我想你正在寻找这样的东西：

@Override
public String toString() {
    return "myData{" +
        "fullName=" + Arrays.toString(fullName) +
        ", skype='" + skype + '\'' +
        ", github='" + github + '\'' +
        ", myData=" + myData +
        '}';
}

public class myData {
    ...
    @Override
    public String toString() {
        ...
    }

    public static void main(String[] args) {
        myData myData = ...
        System.out.println(myData);
    }
}

public class MyData {

private static final String[] myArray = new String[]{"Mimi Rudolph", "minirudolph"};

String[] fullName = cutName(myArray[0]);
String skype = myArray[1];
String github = null;
Object myData = new Object();

private static String[] cutName(String string) {
    return string.split(" ");
}

public MyData(String[] fullName, String skype, String github) {
    this.fullName = fullName;
    this.skype = skype;
    this.github = github;
}

public static void main(String[] args) {
    MyData myData = new MyData(myArray, "Skype string goes here", "githun string goes here");
    System.out.println(myData.fullName);
    System.out.println(myData.github);
    System.out.println(myData.skype);
}
}
@泰，我认为你的代码中缺少了一些概念。 一旦Java是一种面向对象的编程语言，当您想要一个类的新实例时，就应该避免在方法中使用
静态

要使用
static
调用方法，您不需要对象的新实例（例如，可以将其称为
MyData.cutName
）

另一方面，当您创建对象的新实例时，将访问构造函数

我相信您可以摆脱数组，但我将其保留在您的
cutName
方法中。 你可以吃这样的东西

public class MyData {
    private String fullname;
    private String skype;
    private String github;

    public MyData(String fullname, String skype, String github) {
        this.fullname = fullname;
        this.skype = skype;
        this.github = github;
    }

    public String getFullname() {
        return this.fullname;
    }

    public String getSkype() {
        return this.skype;
    }

    public String getGithub() {
        return this.github;
    }

    public String[] cutName(String string) {
        return string.split(" ");
    }

    @Override
    public String toString() {
        return "Fullname: " + this.fullname + "; Skype: " + this.skype + "; Github: " + this.github;
    }

    public static void main(String[] args) {
        MyData myData = new MyData("Mimi Rudolph", "minirudolph_skype", "minirudolph_githnub");
        System.out.println("First name: " + myData.cutName(myData.getFullname())[0]);
        System.out.println("Last name: " + myData.cutName(myData.getFullname())[1]);
        System.out.println(myData);
    }
}
产出将是：

First name: Mimi
Last name: Rudolph
Fullname: Mimi Rudolph; Skype: minirudolph_skype; Github: minirudolph_githnub
在类中设置属性并从新实例中设置属性将有助于提高可重用性

希望有帮助。

@Tai，我认为您的代码中缺少一些概念。 一旦Java是一种面向对象的编程语言，当您想要一个类的新实例时，就应该避免在方法中使用
静态

要使用
static
调用方法，您不需要对象的新实例（例如，可以将其称为
MyData.cutName
）

另一方面，当您创建对象的新实例时，将访问构造函数

我相信您可以摆脱数组，但我将其保留在您的
cutName
方法中。 你可以吃这样的东西

public class MyData {
    private String fullname;
    private String skype;
    private String github;

    public MyData(String fullname, String skype, String github) {
        this.fullname = fullname;
        this.skype = skype;
        this.github = github;
    }

    public String getFullname() {
        return this.fullname;
    }

    public String getSkype() {
        return this.skype;
    }

    public String getGithub() {
        return this.github;
    }

    public String[] cutName(String string) {
        return string.split(" ");
    }

    @Override
    public String toString() {
        return "Fullname: " + this.fullname + "; Skype: " + this.skype + "; Github: " + this.github;
    }

    public static void main(String[] args) {
        MyData myData = new MyData("Mimi Rudolph", "minirudolph_skype", "minirudolph_githnub");
        System.out.println("First name: " + myData.cutName(myData.getFullname())[0]);
        System.out.println("Last name: " + myData.cutName(myData.getFullname())[1]);
        System.out.println(myData);
    }
}
产出将是：

First name: Mimi
Last name: Rudolph
Fullname: Mimi Rudolph; Skype: minirudolph_skype; Github: minirudolph_githnub
在类中设置属性并从新实例中设置属性将有助于提高可重用性

希望有帮助。

通常，您可以通过以下简单示例向对象添加字符串：

 String a = "abc";
 Object b = a;
 System.out.println(b);
如果要将完整的字符串数组分配给myData对象，则需要执行以下操作：

 Object[] myData  = new Object[myArray.length];
        for(int i=0;i<myArray.length;i++){
            myData [i] = myArray[i];
            System.out.println("MyData Object Array holding strings data: "+myData[i]);
        }

Object[]myData=新对象[myArray.length]；

对于（int i=0；i，通常可以通过以下简单示例向对象添加字符串：


 String a = "abc";
 Object b = a;
 System.out.println(b);


如果要将完整的字符串数组分配给myData对象，则需要执行以下操作：


 Object[] myData  = new Object[myArray.length];
        for(int i=0;i<myArray.length;i++){
            myData [i] = myArray[i];
            System.out.println("MyData Object Array holding strings data: "+myData[i]);
        }



Object[]myData=新对象[myArray.length]；
对于（int i=0；i