Is it okay to not write this in java?
This is not necessary in java, but it is best to write it, like this You can distinguish which is a member variable and which is a formal parameter, especially when the member and formal parameters have the same name.
#this refers to the object itself. All methods and properties owned by this object can be called through this. Of course, it can also be called without adding this.
Generally use this situation:
1. When the local variable and the member variable have the same name, for example this, x = x; this.x is a member variable, And x is a local variable
2. Use this under myeclipse to prompt subsequent methods or member variables
3. Use this in an inner class or anonymous inner class to point to the inner class itself
4. Pass the class itself as a parameter
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