This is about rectangle class explain everything please

[Uyi]

package com.badlogic.gdx.math;

public class Rectangle implements java.io.Serializable
{
public static final com.badlogic.gdx.math.Rectangle tmp;

public static final com.badlogic.gdx.math.Rectangle tmp2;

public float x;

public float y;

public float width;

public float height;

public com.badlogic.gdx.math.Rectangle set(float x, float y, float width, float height) {}

public float getX() {}

public com.badlogic.gdx.math.Rectangle setX(float x) {}

public float getY() {}

public com.badlogic.gdx.math.Rectangle setY(float y) {}

public float getWidth() {}

public com.badlogic.gdx.math.Rectangle setWidth(float width) {}

public float getHeight() {}

public com.badlogic.gdx.math.Rectangle setHeight(float height) {}

public com.badlogic.gdx.math.Vector2 getPosition(com.badlogic.gdx.math.Vector2 position) {}

public com.badlogic.gdx.math.Rectangle setPosition(com.badlogic.gdx.math.Vector2 position) {}

public com.badlogic.gdx.math.Rectangle setPosition(float x, float y) {}

public com.badlogic.gdx.math.Rectangle setSize(float width, float height) {}

public com.badlogic.gdx.math.Rectangle setSize(float sizeXY) {}

public com.badlogic.gdx.math.Vector2 getSize(com.badlogic.gdx.math.Vector2 size) {}

public boolean contains(float x, float y) {}

public boolean contains(com.badlogic.gdx.math.Vector2 point) {}

public boolean contains(com.badlogic.gdx.math.Rectangle rectangle) {}

public boolean overlaps(com.badlogic.gdx.math.Rectangle r) {}

public com.badlogic.gdx.math.Rectangle set(com.badlogic.gdx.math.Rectangle rect) {}

public com.badlogic.gdx.math.Rectangle merge(com.badlogic.gdx.math.Rectangle rect) {}

public com.badlogic.gdx.math.Rectangle merge(float x, float y) {}

public com.badlogic.gdx.math.Rectangle merge(com.badlogic.gdx.math.Vector2 vec) {}

public com.badlogic.gdx.math.Rectangle merge(com.badlogic.gdx.math.Vector2[] vecs) {}

public float getAspectRatio() {}

public com.badlogic.gdx.math.Vector2 getCenter(com.badlogic.gdx.math.Vector2 vector) {}

public com.badlogic.gdx.math.Rectangle setCenter(float x, float y) {}

public com.badlogic.gdx.math.Rectangle setCenter(com.badlogic.gdx.math.Vector2 position) {}

public com.badlogic.gdx.math.Rectangle fitOutside(com.badlogic.gdx.math.Rectangle rect) {}

public com.badlogic.gdx.math.Rectangle fitInside(com.badlogic.gdx.math.Rectangle rect) {}

public java.lang.String toString() {}

public float area() {}

public float perimeter() {}

public int hashCode() {}

public boolean equals(java.lang.Object obj) {}

public Rectangle() {}

public Rectangle(float x, float y, float width, float height) {}

public Rectangle(com.badlogic.gdx.math.Rectangle rect) {}

}