java_获取屏幕分辨率

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int screenWidth = java.awt.Toolkit.getDefaultToolkit().getScreenSize().width;
int screenHeight = java.awt.Toolkit.getDefaultToolkit().getScreenSize().height;

使窗体居中显示

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this.setSize(300, 200);

int screenWidth = java.awt.Toolkit.getDefaultToolkit().getScreenSize().width;
int screenHeight = java.awt.Toolkit.getDefaultToolkit().getScreenSize().height;

this.setLocation((screenWidth - 300) / 2, (screenHeight - 200) / 2);