我将使用更改方法签名重构（Mac上的选项+命令+ c）将额外的参数添加到构造函数。这样调用构造函数的现有代码可以将合理的默认值作为参数传递（如果您愿意）。然后选择多次CTRL + 1可以按照您的建议将新字段快速修复到课堂。

Is there any shortcut that allows me to add a field to the argument list of an existing constructor?

Example:

I hava this class:

public class A {
    int a;
    int b;

    public A(int a, int b) {
        this.a = a;
        this.b = b;
    }
}

when i add a field int c (or many fields) i want to add it to the argumentlist of the constructor and assign the parameter to the field:

public class A {
    int a;
    int b;
    int c; //this is new

    public A(int a, int b, int c) {
        this.a = a;
        this.b = b;
        this.c = c;
    }
}

i currently do this by creating the parameter manually and then press CTRL + 1and then choose "assign parameter to field"

but if i add more than one field at once this isn't really a good solution imho.

I don't want to create a new constructor!

I would use the "change method signature" refactoring first (option+command+c on mac) to add the extra parameter(s) to the constructor. This way existing code that calls the constructor can pass sensible default as parameters (if you like). Then choose as many times CTRL+1 to quick fix the new fields into the class as you suggested.