Rotate a buffered image in Java -

i trying rotate buffered image in java. here code using:

public static bufferedimage rotate(bufferedimage bimg, double angle){     int w = bimg.getwidth();         int h = bimg.getheight();     graphics2d graphic = bimg.creategraphics();     graphic.rotate(math.toradians(angle), w/2, h/2);     graphic.drawimage(bimg, null, 0, 0);     graphic.dispose();     return bimg; } 

i have looked numerous stack overflow questions , answers on topic , not been able figure out why image chopped way when try rotate it. here example showing loaded image: loaded image

after click rotate button calls above function buffered image , 90.0 angle: chopped image

can me understand happening , how fix it?

thanks!

as always, internet rescue. so, code hobbled other resources/post/blogs return new image sized contain rotated image

public bufferedimage rotateimagebydegrees(bufferedimage img, double angle) {              double rads = math.toradians(angle);             double sin = math.abs(math.sin(rads)), cos = math.abs(math.cos(rads));             int w = img.getwidth();             int h = img.getheight();             int newwidth = (int) math.floor(w * cos + h * sin);             int newheight = (int) math.floor(h * cos + w * sin);              bufferedimage rotated = new bufferedimage(newwidth, newheight, bufferedimage.type_int_argb);             graphics2d g2d = rotated.creategraphics();             affinetransform @ = new affinetransform();             at.translate((newwidth - w) / 2, (newheight - h) / 2);              int x = w / 2;             int y = h / 2;              at.rotate(rads, x, y);             g2d.settransform(at);             g2d.drawimage(img, 0, 0, this);             g2d.setcolor(color.red);             g2d.drawrect(0, 0, newwidth - 1, newheight - 1);             g2d.dispose();              return rotated;         } 

updated

so, using png:

and code...

package javaapplication1.pkg040;  import java.awt.color; import java.awt.dimension; import java.awt.eventqueue; import java.awt.graphics; import java.awt.graphics2d; import java.awt.event.actionevent; import java.awt.event.actionlistener; import java.awt.geom.affinetransform; import java.awt.image.bufferedimage; import java.io.file; import java.io.ioexception; import javax.imageio.imageio; import javax.swing.jframe; import javax.swing.jpanel; import javax.swing.timer; import javax.swing.uimanager; import javax.swing.unsupportedlookandfeelexception;  public class test {      public static void main(string[] args) {         new test();     }      public test() {         eventqueue.invokelater(new runnable() {             @override             public void run() {                 try {                     uimanager.setlookandfeel(uimanager.getsystemlookandfeelclassname());                 } catch (classnotfoundexception | instantiationexception | illegalaccessexception | unsupportedlookandfeelexception ex) {                     ex.printstacktrace();                 }                  jframe frame = new jframe("testing");                 frame.setdefaultcloseoperation(jframe.exit_on_close);                 frame.add(new testpane());                 frame.pack();                 frame.setlocationrelativeto(null);                 frame.setvisible(true);             }         });     }      public class testpane extends jpanel {          private bufferedimage master;         private bufferedimage rotated;          public testpane() {             try {                 master = imageio.read(new file("/volumes/disk02/dropbox/megatokyo/miho_small.png"));                 rotated = rotateimagebydegrees(master, 0.0);             } catch (ioexception ex) {                 ex.printstacktrace();             }              timer timer = new timer(40, new actionlistener() {                 private double angle = 0;                 private double delta = 1.0;                  @override                 public void actionperformed(actionevent e) {                     angle += delta;                     rotated = rotateimagebydegrees(master, angle);                     repaint();                 }             });             timer.start();         }          @override         public dimension getpreferredsize() {             return master == null                          ? new dimension(200, 200)                          : new dimension(master.getwidth(), master.getheight());         }          @override         protected void paintcomponent(graphics g) {             super.paintcomponent(g);             if (rotated != null) {                 graphics2d g2d = (graphics2d) g.create();                 int x = (getwidth() - rotated.getwidth()) / 2;                 int y = (getheight() - rotated.getheight()) / 2;                 g2d.drawimage(rotated, x, y, this);                 g2d.dispose();             }         }          public bufferedimage rotateimagebydegrees(bufferedimage img, double angle) {              double rads = math.toradians(angle);             double sin = math.abs(math.sin(rads)), cos = math.abs(math.cos(rads));             int w = img.getwidth();             int h = img.getheight();             int newwidth = (int) math.floor(w * cos + h * sin);             int newheight = (int) math.floor(h * cos + w * sin);              bufferedimage rotated = new bufferedimage(newwidth, newheight, bufferedimage.type_int_argb);             graphics2d g2d = rotated.creategraphics();             affinetransform @ = new affinetransform();             at.translate((newwidth - w) / 2, (newheight - h) / 2);              int x = w / 2;             int y = h / 2;              at.rotate(rads, x, y);             g2d.settransform(at);             g2d.drawimage(img, 0, 0, this);             g2d.dispose();              return rotated;         }     }  } 

i can generate like...